Neurobiological Models of Two-Choice Decision Making Can Be Reduced to a One-Dimensional Nonlinear Diffusion Equation
Events
Loading … Spinner

CiteULike | Further Information

Mendeley | Further Information

{"title"=>"Neurobiological models of two-choice decision making can be reduced to a one-dimensional nonlinear diffusion equation", "type"=>"journal", "authors"=>[{"first_name"=>"Alex", "last_name"=>"Roxin", "scopus_author_id"=>"6603012798"}, {"first_name"=>"Anders", "last_name"=>"Ledberg", "scopus_author_id"=>"6602403928"}], "year"=>2008, "source"=>"PLoS Computational Biology", "identifiers"=>{"pui"=>"351497519", "issn"=>"1553734X", "isbn"=>"1553-7358 (Electronic)", "doi"=>"10.1371/journal.pcbi.1000046", "scopus"=>"2-s2.0-41849119819", "pmid"=>"18369436", "sgr"=>"41849119819"}, "id"=>"2b3c0cce-c334-3e67-be04-6cf759565472", "abstract"=>"The response behaviors in many two-alternative choice tasks are well described by so-called sequential sampling models. In these models, the evidence for each one of the two alternatives accumulates over time until it reaches a threshold, at which point a response is made. At the neurophysiological level, single neuron data recorded while monkeys are engaged in two-alternative choice tasks are well described by winner-take-all network models in which the two choices are represented in the firing rates of separate populations of neurons. Here, we show that such nonlinear network models can generally be reduced to a one-dimensional nonlinear diffusion equation, which bears functional resemblance to standard sequential sampling models of behavior. This reduction gives the functional dependence of performance and reaction-times on external inputs in the original system, irrespective of the system details. What is more, the nonlinear diffusion equation can provide excellent fits to behavioral data from two-choice decision making tasks by varying these external inputs. This suggests that changes in behavior under various experimental conditions, e.g. changes in stimulus coherence or response deadline, are driven by internal modulation of afferent inputs to putative decision making circuits in the brain. For certain model systems one can analytically derive the nonlinear diffusion equation, thereby mapping the original system parameters onto the diffusion equation coefficients. Here, we illustrate this with three model systems including coupled rate equations and a network of spiking neurons.", "link"=>"http://www.mendeley.com/research/neurobiological-models-twochoice-decision-making-reduced-onedimensional-nonlinear-diffusion-equation", "reader_count"=>130, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>10, "Librarian"=>1, "Researcher"=>36, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>40, "Student > Postgraduate"=>4, "Student > Master"=>15, "Other"=>2, "Student > Bachelor"=>7, "Lecturer > Senior Lecturer"=>1, "Professor"=>8}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>10, "Librarian"=>1, "Researcher"=>36, "Student > Doctoral Student"=>4, "Student > Ph. D. Student"=>40, "Student > Postgraduate"=>4, "Student > Master"=>15, "Other"=>2, "Student > Bachelor"=>7, "Lecturer > Senior Lecturer"=>1, "Professor"=>8}, "reader_count_by_subject_area"=>{"Unspecified"=>9, "Engineering"=>3, "Mathematics"=>3, "Medicine and Dentistry"=>3, "Agricultural and Biological Sciences"=>38, "Neuroscience"=>17, "Physics and Astronomy"=>13, "Psychology"=>25, "Chemistry"=>1, "Computer Science"=>16, "Immunology and Microbiology"=>1, "Economics, Econometrics and Finance"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>3}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>3}, "Neuroscience"=>{"Neuroscience"=>17}, "Chemistry"=>{"Chemistry"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>13}, "Psychology"=>{"Psychology"=>25}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>1}, "Economics, Econometrics and Finance"=>{"Economics, Econometrics and Finance"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>38}, "Computer Science"=>{"Computer Science"=>16}, "Mathematics"=>{"Mathematics"=>3}, "Unspecified"=>{"Unspecified"=>9}}, "reader_count_by_country"=>{"United States"=>3, "United Kingdom"=>2, "Italy"=>1, "France"=>1, "Portugal"=>1, "Switzerland"=>3, "Germany"=>7, "Estonia"=>1, "Spain"=>1}, "group_count"=>7}

CrossRef

Scopus | Further Information

{"@_fa"=>"true", "link"=>[{"@_fa"=>"true", "@ref"=>"self", "@href"=>"https://api.elsevier.com/content/abstract/scopus_id/41849119819"}, {"@_fa"=>"true", "@ref"=>"author-affiliation", "@href"=>"https://api.elsevier.com/content/abstract/scopus_id/41849119819?field=author,affiliation"}, {"@_fa"=>"true", "@ref"=>"scopus", "@href"=>"https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=41849119819&origin=inward"}, {"@_fa"=>"true", "@ref"=>"scopus-citedby", "@href"=>"https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=41849119819&origin=inward"}], "prism:url"=>"https://api.elsevier.com/content/abstract/scopus_id/41849119819", "dc:identifier"=>"SCOPUS_ID:41849119819", "eid"=>"2-s2.0-41849119819", "dc:title"=>"Neurobiological models of two-choice decision making can be reduced to a one-dimensional nonlinear diffusion equation", "dc:creator"=>"Roxin A.", "prism:publicationName"=>"PLoS Computational Biology", "prism:issn"=>"1553734X", "prism:eIssn"=>"15537358", "prism:volume"=>"4", "prism:issueIdentifier"=>"3", "prism:pageRange"=>nil, "prism:coverDate"=>"2008-03-01", "prism:coverDisplayDate"=>"March 2008", "prism:doi"=>"10.1371/journal.pcbi.1000046", "citedby-count"=>"83", "affiliation"=>[{"@_fa"=>"true", "affilname"=>"Universitat Pompeu Fabra Barcelona", "affiliation-city"=>"Barcelona", "affiliation-country"=>"Spain"}], "pubmed-id"=>"18369436", "prism:aggregationType"=>"Journal", "subtype"=>"ar", "subtypeDescription"=>"Article", "article-number"=>"e1000046", "source-id"=>"4000151810", "openaccess"=>"1", "openaccessFlag"=>true}

Facebook

  • {"url"=>"http%3A%2F%2Fjournals.plos.org%2Fploscompbiol%2Farticle%3Fid%3D10.1371%252Fjournal.pcbi.1000046", "share_count"=>0, "like_count"=>0, "comment_count"=>0, "click_count"=>0, "total_count"=>0}

Counter

  • {"month"=>"3", "year"=>"2008", "pdf_views"=>"37", "xml_views"=>"0", "html_views"=>"109"}
  • {"month"=>"4", "year"=>"2008", "pdf_views"=>"70", "xml_views"=>"7", "html_views"=>"273"}
  • {"month"=>"5", "year"=>"2008", "pdf_views"=>"17", "xml_views"=>"11", "html_views"=>"108"}
  • {"month"=>"6", "year"=>"2008", "pdf_views"=>"25", "xml_views"=>"30", "html_views"=>"131"}
  • {"month"=>"7", "year"=>"2008", "pdf_views"=>"22", "xml_views"=>"12", "html_views"=>"100"}
  • {"month"=>"8", "year"=>"2008", "pdf_views"=>"23", "xml_views"=>"0", "html_views"=>"70"}
  • {"month"=>"9", "year"=>"2008", "pdf_views"=>"5", "xml_views"=>"1", "html_views"=>"61"}
  • {"month"=>"10", "year"=>"2008", "pdf_views"=>"13", "xml_views"=>"1", "html_views"=>"43"}
  • {"month"=>"11", "year"=>"2008", "pdf_views"=>"15", "xml_views"=>"0", "html_views"=>"47"}
  • {"month"=>"12", "year"=>"2008", "pdf_views"=>"10", "xml_views"=>"2", "html_views"=>"36"}
  • {"month"=>"1", "year"=>"2009", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"24"}
  • {"month"=>"2", "year"=>"2009", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"25"}
  • {"month"=>"3", "year"=>"2009", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"24"}
  • {"month"=>"4", "year"=>"2009", "pdf_views"=>"3", "xml_views"=>"0", "html_views"=>"23"}
  • {"month"=>"5", "year"=>"2009", "pdf_views"=>"3", "xml_views"=>"0", "html_views"=>"24"}
  • {"month"=>"6", "year"=>"2009", "pdf_views"=>"7", "xml_views"=>"1", "html_views"=>"23"}
  • {"month"=>"7", "year"=>"2009", "pdf_views"=>"15", "xml_views"=>"1", "html_views"=>"28"}
  • {"month"=>"8", "year"=>"2009", "pdf_views"=>"0", "xml_views"=>"0", "html_views"=>"13"}
  • {"month"=>"9", "year"=>"2009", "pdf_views"=>"7", "xml_views"=>"0", "html_views"=>"19"}
  • {"month"=>"10", "year"=>"2009", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"38"}
  • {"month"=>"11", "year"=>"2009", "pdf_views"=>"10", "xml_views"=>"1", "html_views"=>"46"}
  • {"month"=>"12", "year"=>"2009", "pdf_views"=>"9", "xml_views"=>"1", "html_views"=>"26"}
  • {"month"=>"1", "year"=>"2010", "pdf_views"=>"5", "xml_views"=>"1", "html_views"=>"18"}
  • {"month"=>"2", "year"=>"2010", "pdf_views"=>"1", "xml_views"=>"0", "html_views"=>"18"}
  • {"month"=>"3", "year"=>"2010", "pdf_views"=>"9", "xml_views"=>"1", "html_views"=>"22"}
  • {"month"=>"4", "year"=>"2010", "pdf_views"=>"11", "xml_views"=>"3", "html_views"=>"45"}
  • {"month"=>"5", "year"=>"2010", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"171"}
  • {"month"=>"6", "year"=>"2010", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"32"}
  • {"month"=>"7", "year"=>"2010", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"29"}
  • {"month"=>"8", "year"=>"2010", "pdf_views"=>"6", "xml_views"=>"0", "html_views"=>"33"}
  • {"month"=>"9", "year"=>"2010", "pdf_views"=>"8", "xml_views"=>"1", "html_views"=>"24"}
  • {"month"=>"10", "year"=>"2010", "pdf_views"=>"5", "xml_views"=>"1", "html_views"=>"34"}
  • {"month"=>"11", "year"=>"2010", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"30"}
  • {"month"=>"12", "year"=>"2010", "pdf_views"=>"6", "xml_views"=>"0", "html_views"=>"30"}
  • {"month"=>"1", "year"=>"2011", "pdf_views"=>"9", "xml_views"=>"2", "html_views"=>"25"}
  • {"month"=>"2", "year"=>"2011", "pdf_views"=>"1", "xml_views"=>"1", "html_views"=>"21"}
  • {"month"=>"3", "year"=>"2011", "pdf_views"=>"10", "xml_views"=>"0", "html_views"=>"35"}
  • {"month"=>"4", "year"=>"2011", "pdf_views"=>"13", "xml_views"=>"0", "html_views"=>"34"}
  • {"month"=>"5", "year"=>"2011", "pdf_views"=>"2", "xml_views"=>"2", "html_views"=>"16"}
  • {"month"=>"6", "year"=>"2011", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"37"}
  • {"month"=>"7", "year"=>"2011", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"21"}
  • {"month"=>"8", "year"=>"2011", "pdf_views"=>"7", "xml_views"=>"1", "html_views"=>"20"}
  • {"month"=>"9", "year"=>"2011", "pdf_views"=>"7", "xml_views"=>"1", "html_views"=>"44"}
  • {"month"=>"10", "year"=>"2011", "pdf_views"=>"7", "xml_views"=>"0", "html_views"=>"57"}
  • {"month"=>"11", "year"=>"2011", "pdf_views"=>"14", "xml_views"=>"2", "html_views"=>"68"}
  • {"month"=>"12", "year"=>"2011", "pdf_views"=>"18", "xml_views"=>"0", "html_views"=>"69"}
  • {"month"=>"1", "year"=>"2012", "pdf_views"=>"6", "xml_views"=>"0", "html_views"=>"39"}
  • {"month"=>"2", "year"=>"2012", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"33"}
  • {"month"=>"3", "year"=>"2012", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"33"}
  • {"month"=>"4", "year"=>"2012", "pdf_views"=>"9", "xml_views"=>"1", "html_views"=>"40"}
  • {"month"=>"5", "year"=>"2012", "pdf_views"=>"12", "xml_views"=>"1", "html_views"=>"45"}
  • {"month"=>"6", "year"=>"2012", "pdf_views"=>"10", "xml_views"=>"1", "html_views"=>"39"}
  • {"month"=>"7", "year"=>"2012", "pdf_views"=>"7", "xml_views"=>"0", "html_views"=>"31"}
  • {"month"=>"8", "year"=>"2012", "pdf_views"=>"8", "xml_views"=>"5", "html_views"=>"35"}
  • {"month"=>"9", "year"=>"2012", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"42"}
  • {"month"=>"10", "year"=>"2012", "pdf_views"=>"15", "xml_views"=>"0", "html_views"=>"61"}
  • {"month"=>"11", "year"=>"2012", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"64"}
  • {"month"=>"12", "year"=>"2012", "pdf_views"=>"2", "xml_views"=>"0", "html_views"=>"45"}
  • {"month"=>"1", "year"=>"2013", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"88"}
  • {"month"=>"2", "year"=>"2013", "pdf_views"=>"7", "xml_views"=>"2", "html_views"=>"372"}
  • {"month"=>"3", "year"=>"2013", "pdf_views"=>"13", "xml_views"=>"0", "html_views"=>"66"}
  • {"month"=>"4", "year"=>"2013", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"51"}
  • {"month"=>"5", "year"=>"2013", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"79"}
  • {"month"=>"6", "year"=>"2013", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"90"}
  • {"month"=>"7", "year"=>"2013", "pdf_views"=>"7", "xml_views"=>"0", "html_views"=>"65"}
  • {"month"=>"8", "year"=>"2013", "pdf_views"=>"7", "xml_views"=>"0", "html_views"=>"50"}
  • {"month"=>"9", "year"=>"2013", "pdf_views"=>"2", "xml_views"=>"0", "html_views"=>"56"}
  • {"month"=>"10", "year"=>"2013", "pdf_views"=>"8", "xml_views"=>"1", "html_views"=>"30"}
  • {"month"=>"11", "year"=>"2013", "pdf_views"=>"2", "xml_views"=>"2", "html_views"=>"26"}
  • {"month"=>"12", "year"=>"2013", "pdf_views"=>"8", "xml_views"=>"1", "html_views"=>"75"}
  • {"month"=>"1", "year"=>"2014", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"58"}
  • {"month"=>"2", "year"=>"2014", "pdf_views"=>"3", "xml_views"=>"0", "html_views"=>"48"}
  • {"month"=>"3", "year"=>"2014", "pdf_views"=>"5", "xml_views"=>"2", "html_views"=>"110"}
  • {"month"=>"4", "year"=>"2014", "pdf_views"=>"11", "xml_views"=>"1", "html_views"=>"149"}
  • {"month"=>"5", "year"=>"2014", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"121"}
  • {"month"=>"6", "year"=>"2014", "pdf_views"=>"4", "xml_views"=>"0", "html_views"=>"116"}
  • {"month"=>"7", "year"=>"2014", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"69"}
  • {"month"=>"8", "year"=>"2014", "pdf_views"=>"3", "xml_views"=>"3", "html_views"=>"58"}
  • {"month"=>"9", "year"=>"2014", "pdf_views"=>"11", "xml_views"=>"1", "html_views"=>"62"}
  • {"month"=>"10", "year"=>"2014", "pdf_views"=>"7", "xml_views"=>"1", "html_views"=>"82"}
  • {"month"=>"11", "year"=>"2014", "pdf_views"=>"3", "xml_views"=>"1", "html_views"=>"63"}
  • {"month"=>"12", "year"=>"2014", "pdf_views"=>"4", "xml_views"=>"3", "html_views"=>"46"}
  • {"month"=>"1", "year"=>"2015", "pdf_views"=>"10", "xml_views"=>"0", "html_views"=>"35"}
  • {"month"=>"2", "year"=>"2015", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"18"}
  • {"month"=>"3", "year"=>"2015", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"37"}
  • {"month"=>"4", "year"=>"2015", "pdf_views"=>"8", "xml_views"=>"1", "html_views"=>"31"}
  • {"month"=>"5", "year"=>"2015", "pdf_views"=>"20", "xml_views"=>"0", "html_views"=>"30"}
  • {"month"=>"6", "year"=>"2015", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"34"}
  • {"month"=>"7", "year"=>"2015", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"80"}
  • {"month"=>"8", "year"=>"2015", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"16"}
  • {"month"=>"9", "year"=>"2015", "pdf_views"=>"4", "xml_views"=>"0", "html_views"=>"19"}
  • {"month"=>"10", "year"=>"2015", "pdf_views"=>"4", "xml_views"=>"1", "html_views"=>"20"}
  • {"month"=>"11", "year"=>"2015", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"41"}
  • {"month"=>"12", "year"=>"2015", "pdf_views"=>"25", "xml_views"=>"1", "html_views"=>"31"}
  • {"month"=>"1", "year"=>"2016", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"27"}
  • {"month"=>"2", "year"=>"2016", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"23"}
  • {"month"=>"3", "year"=>"2016", "pdf_views"=>"3", "xml_views"=>"0", "html_views"=>"23"}
  • {"month"=>"4", "year"=>"2016", "pdf_views"=>"14", "xml_views"=>"0", "html_views"=>"28"}
  • {"month"=>"5", "year"=>"2016", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"33"}
  • {"month"=>"6", "year"=>"2016", "pdf_views"=>"19", "xml_views"=>"0", "html_views"=>"18"}
  • {"month"=>"7", "year"=>"2016", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"14"}
  • {"month"=>"8", "year"=>"2016", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"34"}
  • {"month"=>"9", "year"=>"2016", "pdf_views"=>"17", "xml_views"=>"0", "html_views"=>"42"}
  • {"month"=>"10", "year"=>"2016", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"34"}
  • {"month"=>"11", "year"=>"2016", "pdf_views"=>"1", "xml_views"=>"0", "html_views"=>"27"}
  • {"month"=>"12", "year"=>"2016", "pdf_views"=>"22", "xml_views"=>"0", "html_views"=>"24"}
  • {"month"=>"1", "year"=>"2017", "pdf_views"=>"36", "xml_views"=>"1", "html_views"=>"21"}
  • {"month"=>"2", "year"=>"2017", "pdf_views"=>"50", "xml_views"=>"0", "html_views"=>"17"}
  • {"month"=>"3", "year"=>"2017", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"21"}
  • {"month"=>"4", "year"=>"2017", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"27"}
  • {"month"=>"5", "year"=>"2017", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"42"}
  • {"month"=>"6", "year"=>"2017", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"31"}
  • {"month"=>"7", "year"=>"2017", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"26"}
  • {"month"=>"8", "year"=>"2017", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"31"}
  • {"month"=>"9", "year"=>"2017", "pdf_views"=>"10", "xml_views"=>"1", "html_views"=>"25"}
  • {"month"=>"10", "year"=>"2017", "pdf_views"=>"7", "xml_views"=>"2", "html_views"=>"29"}
  • {"month"=>"11", "year"=>"2017", "pdf_views"=>"16", "xml_views"=>"0", "html_views"=>"40"}
  • {"month"=>"12", "year"=>"2017", "pdf_views"=>"3", "xml_views"=>"1", "html_views"=>"17"}
  • {"month"=>"1", "year"=>"2018", "pdf_views"=>"15", "xml_views"=>"0", "html_views"=>"21"}
  • {"month"=>"2", "year"=>"2018", "pdf_views"=>"5", "xml_views"=>"1", "html_views"=>"4"}
  • {"month"=>"3", "year"=>"2018", "pdf_views"=>"7", "xml_views"=>"0", "html_views"=>"12"}
  • {"month"=>"4", "year"=>"2018", "pdf_views"=>"26", "xml_views"=>"0", "html_views"=>"23"}
  • {"month"=>"5", "year"=>"2018", "pdf_views"=>"20", "xml_views"=>"0", "html_views"=>"15"}
  • {"month"=>"6", "year"=>"2018", "pdf_views"=>"17", "xml_views"=>"0", "html_views"=>"12"}
  • {"month"=>"7", "year"=>"2018", "pdf_views"=>"16", "xml_views"=>"3", "html_views"=>"18"}
  • {"month"=>"8", "year"=>"2018", "pdf_views"=>"22", "xml_views"=>"1", "html_views"=>"18"}
  • {"month"=>"9", "year"=>"2018", "pdf_views"=>"37", "xml_views"=>"0", "html_views"=>"42"}
  • {"month"=>"10", "year"=>"2018", "pdf_views"=>"47", "xml_views"=>"0", "html_views"=>"54"}
  • {"month"=>"11", "year"=>"2018", "pdf_views"=>"5", "xml_views"=>"0", "html_views"=>"8"}
  • {"month"=>"12", "year"=>"2018", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"17"}
  • {"month"=>"1", "year"=>"2019", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"35"}
  • {"month"=>"2", "year"=>"2019", "pdf_views"=>"4", "xml_views"=>"0", "html_views"=>"13"}
  • {"month"=>"3", "year"=>"2019", "pdf_views"=>"21", "xml_views"=>"0", "html_views"=>"26"}
  • {"month"=>"4", "year"=>"2019", "pdf_views"=>"10", "xml_views"=>"0", "html_views"=>"18"}
  • {"month"=>"5", "year"=>"2019", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"19"}
  • {"month"=>"6", "year"=>"2019", "pdf_views"=>"15", "xml_views"=>"0", "html_views"=>"9"}
  • {"month"=>"7", "year"=>"2019", "pdf_views"=>"12", "xml_views"=>"0", "html_views"=>"24"}
  • {"month"=>"8", "year"=>"2019", "pdf_views"=>"16", "xml_views"=>"0", "html_views"=>"28"}
  • {"month"=>"9", "year"=>"2019", "pdf_views"=>"11", "xml_views"=>"0", "html_views"=>"15"}
  • {"month"=>"10", "year"=>"2019", "pdf_views"=>"13", "xml_views"=>"0", "html_views"=>"14"}
  • {"month"=>"11", "year"=>"2019", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"7"}
  • {"month"=>"12", "year"=>"2019", "pdf_views"=>"15", "xml_views"=>"0", "html_views"=>"17"}
  • {"month"=>"1", "year"=>"2020", "pdf_views"=>"20", "xml_views"=>"0", "html_views"=>"12"}
  • {"month"=>"2", "year"=>"2020", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"3"}
  • {"month"=>"3", "year"=>"2020", "pdf_views"=>"10", "xml_views"=>"1", "html_views"=>"14"}
  • {"month"=>"4", "year"=>"2020", "pdf_views"=>"8", "xml_views"=>"0", "html_views"=>"11"}
  • {"month"=>"5", "year"=>"2020", "pdf_views"=>"3", "xml_views"=>"0", "html_views"=>"19"}
  • {"month"=>"6", "year"=>"2020", "pdf_views"=>"13", "xml_views"=>"0", "html_views"=>"18"}
  • {"month"=>"7", "year"=>"2020", "pdf_views"=>"4", "xml_views"=>"1", "html_views"=>"10"}
  • {"month"=>"8", "year"=>"2020", "pdf_views"=>"9", "xml_views"=>"0", "html_views"=>"16"}
  • {"month"=>"9", "year"=>"2020", "pdf_views"=>"10", "xml_views"=>"0", "html_views"=>"19"}
  • {"month"=>"10", "year"=>"2020", "pdf_views"=>"17", "xml_views"=>"0", "html_views"=>"25"}
  • {"month"=>"11", "year"=>"2020", "pdf_views"=>"4", "xml_views"=>"0", "html_views"=>"9"}

Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/460434"], "description"=>"<div><p>The response behaviors in many two-alternative choice tasks are well described by so-called sequential sampling models. In these models, the evidence for each one of the two alternatives accumulates over time until it reaches a threshold, at which point a response is made. At the neurophysiological level, single neuron data recorded while monkeys are engaged in two-alternative choice tasks are well described by winner-take-all network models in which the two choices are represented in the firing rates of separate populations of neurons. Here, we show that such nonlinear network models can generally be reduced to a one-dimensional nonlinear diffusion equation, which bears functional resemblance to standard sequential sampling models of behavior. This reduction gives the functional dependence of performance and reaction-times on external inputs in the original system, irrespective of the system details. What is more, the nonlinear diffusion equation can provide excellent fits to behavioral data from two-choice decision making tasks by varying these external inputs. This suggests that changes in behavior under various experimental conditions, e.g. changes in stimulus coherence or response deadline, are driven by internal modulation of afferent inputs to putative decision making circuits in the brain. For certain model systems one can analytically derive the nonlinear diffusion equation, thereby mapping the original system parameters onto the diffusion equation coefficients. Here, we illustrate this with three model systems including coupled rate equations and a network of spiking neurons.</p></div>", "links"=>[], "tags"=>["neurobiological", "models", "two-choice", "making", "reduced", "one-dimensional", "nonlinear", "diffusion"], "article_id"=>150729, "categories"=>["Neuroscience", "Medicine"], "users"=>["Alex Roxin", "Anders Ledberg"], "doi"=>"https://dx.doi.org/10.1371/journal.pcbi.1000046", "stats"=>{"downloads"=>5, "page_views"=>33, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Neurobiological_Models_of_Two_Choice_Decision_Making_Can_Be_Reduced_to_a_One_Dimensional_Nonlinear_Diffusion_Equation/150729", "title"=>"Neurobiological Models of Two-Choice Decision Making Can Be Reduced to a One-Dimensional Nonlinear Diffusion Equation", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2008-03-28 00:12:09"}
  • {"files"=>["https://ndownloader.figshare.com/files/933902"], "description"=>"<p>The populations are shown schematically as circles and the respective inputs as arrows. The relative level of input to the populations is represented by the spike trains “recorded” from the input arrows. (A) The energy <i>E</i>(<i>X</i>) as a function of the difference in inputs Δν shown for . Two cases are shown. Case 1, in green: both populations receive the same average input. This results in a symmetric energy function. Case 2, in black: population B receives more input than population A. This tilts the energy function, biasing the probability of choosing population B over A. (B) The energy <i>E</i>(<i>X</i>) as a function of the mean input shown for Δν = 0 (both populations receive the same mean input). Three cases are shown. Case 1, in green: . This results in a relatively flat energy function with zero curvature at zero. Case 2, in red: . This results in a local minimum in the energy function. The system must escape over one of the two barriers for a decision to be made. Case 3, in blue: . Here the inputs are large enough to transform the local minimum to a local maximum in the energy, making decisions faster and less accurate.</p>", "links"=>[], "tags"=>["inputs", "populations", "winner-take-all"], "article_id"=>604354, "categories"=>["Neuroscience", "Medicine"], "users"=>["Alex Roxin", "Anders Ledberg"], "doi"=>"https://dx.doi.org/10.1371/journal.pcbi.1000046.g002", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Diagram_of_the_energy_E_X_as_a_function_of_the_difference_in_inputs_and_the_mean_input_to_two_populations_in_a_winner_take_all_network_/604354", "title"=>"Diagram of the energy <i>E</i>(<i>X</i>) as a function of the difference in inputs Δν and the mean input to two populations in a winner-take-all network.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2008-03-28 01:12:34"}
  • {"files"=>["https://ndownloader.figshare.com/files/934069"], "description"=>"<p>Filled circles: experimental data. Lines: solution of nonlinear diffusion equation, Equation 8. Open squares: system of rate equations. Error bars represents approximate 95% confidence intervals. Data are from three sets of experiments in which subjects are instructed to respond with 0.5 s (blue) 1 s (red) and 2 s (black). (A) Reaction times on correct trials as a function of coherence for subject 1. (B): Fraction of correct responses as a function of coherence for subject 1. Parameter values from Equation 8 for subject 1: ηΔν = <i>coherence</i>×1.25<i>e</i>−5, σ = 0.00135, , and 0.012 for 2 s, 1 s, and 0.5 s trials, respectively. (C) Reaction times on correct trials as a function of coherence for subject 2. (D) Fraction of correct responses as a function of coherence for subject 2. Parameter values from Equation 8 for subject 2: ηΔν = <i>coherence</i>×1.25<i>e</i>−5, σ = 0.00135, , and 0.008 for 2 s, 1 s, and 0.5 s trials, respectively. A fixed offset of 260 ms and 220 ms was added to <i>RT</i> for subjects 1 and 2, respectively. We choose parameter values in the system of rate equations to yield precisely these parameters in Equation 8. See <a href=\"http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1000046#s4\" target=\"_blank\">Materials and Methods</a> for values.</p>", "links"=>[], "tags"=>["shadlen"], "article_id"=>604524, "categories"=>["Neuroscience", "Medicine"], "users"=>["Alex Roxin", "Anders Ledberg"], "doi"=>"https://dx.doi.org/10.1371/journal.pcbi.1000046.g004", "stats"=>{"downloads"=>1, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Fit_to_data_from_Figure_7_in_Palmer_Huk_and_Shadlen_10_with_Equation_8_and_subsequent_match_with_system_of_rate_equations_/604524", "title"=>"Fit to data from Figure 7 in Palmer, Huk, and Shadlen [10] with Equation 8 and subsequent match with system of rate equations.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2008-03-28 01:15:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/934000"], "description"=>"<p>Black symbols: experimental data. Error bars represent approximate 95% confidence intervals. Lines: solution of Equation 8. Red symbols: simulated data from a system of rate equations (Equations 11–13). (A) Reaction times on correct and error trials as a function of coherence. Circles (solid line) and diamonds (dotted line) are for correct and error trials respectively. (B) Fraction of correct responses as a function of coherence. Experimental data are shown as crosses. Parameter values for Equation 8: ηΔν = <i>coherence</i>×6.6667<i>e</i>−6, , and σ = 0.00135. A fixed offset of 230 ms is added to the reaction times. We choose parameter values in the system of rate equations to yield precisely these parameters in Equation 8. See <a href=\"http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1000046#s4\" target=\"_blank\">Materials and Methods</a> for values.</p>", "links"=>[], "tags"=>["roitman", "shadlen", "nonlinear", "diffusion"], "article_id"=>604445, "categories"=>["Neuroscience", "Medicine"], "users"=>["Alex Roxin", "Anders Ledberg"], "doi"=>"https://dx.doi.org/10.1371/journal.pcbi.1000046.g003", "stats"=>{"downloads"=>0, "page_views"=>1, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Fit_to_data_from_Roitman_and_Shadlen_21_Table_2_with_the_nonlinear_diffusion_equation_Equation_8_and_subsequent_match_with_system_of_rate_equations_/604445", "title"=>"Fit to data from Roitman and Shadlen ([21], Table 2) with the nonlinear diffusion equation (Equation 8) and subsequent match with system of rate equations.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2008-03-28 01:14:05"}
  • {"files"=>["https://ndownloader.figshare.com/files/933802"], "description"=>"<p>For all panels shown, τ = <i>g</i> = <i>c</i> = 1 and <i>I<sub>I</sub></i> = 0.2. The nonlinear transfer function is taken as with α = 1.5, β = 2.5. (A) Below a critical value of the recurrent excitation the system exhibits a supercritical bifurcation. Shown are the fixed points of Equations 11–13 without noise using a Newton-Raphson solver, in black. Also shown are approximations of the fixed points given by Equations 8 with coefficients Equations 14–17, in red. Here <i>s</i> = 1.5 and <i>I</i><sub>1</sub> = <i>I</i><sub>2</sub> = 0. (B) Typical dynamics for a single trial given a supercritical bifurcation. Shown are the time-dependent variables <i>r</i><sub>1</sub> and <i>r</i><sub>2</sub> from integrating Equations 11–13 in black and the approximation obtained by integrating the nonlinear diffusion equation Equation 8 with coefficients Equations 14–17, in red. Left inset: the same trial shown for a longer time. Right inset: The energy function given the parameter values used for this trial. Here <i>s</i> = 1.5, <i>I</i> = <i>I<sub>cr</sub></i> = 0.6502, <i>I</i><sub>1</sub> = 0.0025, <i>I</i><sub>2</sub> = −0.0025, σ<i><sub>E</sub></i> = σ<i><sub>I</sub></i> = 0.01. Initial conditions for rate equations, <i>r</i><sub>1</sub>(0) = <i>r</i><sub>2</sub>(0) = <i>r<sub>I</sub></i>(0) = 0. Initial condition for nonlinear diffusion equation, <i>X</i>(0) = 0. (C) Above a critical value of recurrent excitation <i>s</i> the system exhibits a subcritical bifurcation. Lines are as in (A). Symbols show the value of the common inputs used in the four cases shown in (E). Here <i>s = </i>1.9 and <i>I</i><sub>1</sub> = <i>I</i><sub>2</sub> = 0. (D) Typical dynamics for a single trial given a subcritical bifurcation. Lines and insets are as in (C). Here <i>s</i> = 1.9, <i>I</i> = <i>I<sub>cr</sub></i> = 0.3679, <i>I</i><sub>1</sub> = 0.001, <i>I</i><sub>2</sub> = −0.001. Initial conditions as for (B). (E) A comparison of the fraction of ‘correct decisions’ and mean reaction-times calculated by conducting simulations in the full system, Equations 11–13 (symbols), and with the nonlinear diffusion equation, Equation 8, with coefficients, Equations 14–17 (lines). The parameter values correspond to the bifurcation structure shown in (C). Different symbols indicate different values for the common input <i>I</i> and correspond to symbols in panel C. Specifically, <i>I</i>−<i>I<sub>cr</sub></i> = −0.001 (triangles), 0 (squares), 0.0012 (circles), and 0.0321 (diamonds). Initial conditions for rate equations: <i>I</i> = 0.2 for <i>t</i> = −100 to <i>t</i> = 0 with appropriate steady state solutions. Initial condition for nonlinear diffusion equation <i>X</i>(0) = 0. Thresholds were 0.7 for the rate equation.</p>", "links"=>[], "tags"=>["bifurcation", "measures", "coupled", "equations"], "article_id"=>604247, "categories"=>["Neuroscience", "Medicine"], "users"=>["Alex Roxin", "Anders Ledberg"], "doi"=>"https://dx.doi.org/10.1371/journal.pcbi.1000046.g001", "stats"=>{"downloads"=>1, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_bifurcation_structure_A_C_typical_dynamics_B_D_and_behavioral_measures_E_for_the_system_of_three_coupled_rate_equations_Equations_11_8211_13_/604247", "title"=>"The bifurcation structure (A,C), typical dynamics (B,D) and behavioral measures (E) for the system of three coupled rate equations, Equations 11–13.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2008-03-28 01:10:47"}

PMC Usage Stats | Further Information

  • {"month"=>"1", "scanned-page-browse"=>"0", "cited-by"=>"1", "abstract"=>"0", "full-text"=>"10", "year"=>"2010", "pdf"=>"2", "unique-ip"=>"11", "figure"=>"2", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"scanned-page-browse"=>"0", "month"=>"2", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"14", "unique-ip"=>"13", "pdf"=>"3", "year"=>"2010", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"2"}
  • {"month"=>"3", "scanned-page-browse"=>"0", "cited-by"=>"1", "abstract"=>"0", "full-text"=>"17", "year"=>"2010", "pdf"=>"4", "unique-ip"=>"14", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"scanned-page-browse"=>"0", "month"=>"4", "cited-by"=>"0", "abstract"=>"2", "full-text"=>"10", "unique-ip"=>"11", "pdf"=>"5", "year"=>"2010", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"5", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"11", "year"=>"2010", "pdf"=>"6", "unique-ip"=>"9", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"6", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"5", "unique-ip"=>"3", "pdf"=>"1", "year"=>"2010", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"7", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"5", "year"=>"2010", "pdf"=>"2", "unique-ip"=>"5", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"scanned-page-browse"=>"0", "month"=>"8", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"11", "unique-ip"=>"12", "pdf"=>"4", "year"=>"2010", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"month"=>"9", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"3", "year"=>"2010", "pdf"=>"4", "unique-ip"=>"8", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"10", "cited-by"=>"0", "abstract"=>"2", "full-text"=>"4", "unique-ip"=>"8", "pdf"=>"5", "year"=>"2010", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"11", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"7", "year"=>"2010", "pdf"=>"3", "unique-ip"=>"7", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"12", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"2", "unique-ip"=>"1", "pdf"=>"0", "year"=>"2010", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"1", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"4", "year"=>"2011", "pdf"=>"0", "unique-ip"=>"4", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"2", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"5", "unique-ip"=>"3", "pdf"=>"0", "year"=>"2011", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"3", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"5", "year"=>"2011", "pdf"=>"0", "unique-ip"=>"5", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"4", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"3", "unique-ip"=>"5", "pdf"=>"4", "year"=>"2011", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"month"=>"5", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"3", "full-text"=>"2", "year"=>"2011", "pdf"=>"0", "unique-ip"=>"5", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"6", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"7", "unique-ip"=>"7", "pdf"=>"2", "year"=>"2011", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"7", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"4", "year"=>"2011", "pdf"=>"1", "unique-ip"=>"3", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"8", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"6", "unique-ip"=>"2", "pdf"=>"0", "year"=>"2011", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"9", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"3", "year"=>"2011", "pdf"=>"1", "unique-ip"=>"4", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"10", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"2", "unique-ip"=>"2", "pdf"=>"1", "year"=>"2011", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"11", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"5", "year"=>"2011", "pdf"=>"2", "unique-ip"=>"6", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"12", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"2", "unique-ip"=>"2", "pdf"=>"1", "year"=>"2011", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"1", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"2", "unique-ip"=>"3", "pdf"=>"0", "year"=>"2012", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"2", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"3", "year"=>"2012", "pdf"=>"2", "unique-ip"=>"4", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"scanned-page-browse"=>"0", "month"=>"3", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"0", "unique-ip"=>"1", "pdf"=>"1", "year"=>"2012", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"4", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"5", "year"=>"2012", "pdf"=>"2", "unique-ip"=>"5", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"5", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"1", "unique-ip"=>"1", "pdf"=>"0", "year"=>"2012", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"3", "scanned-page-browse"=>"1", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"0", "year"=>"2008", "pdf"=>"1", "unique-ip"=>"0", "figure"=>"4", "scanned-summary"=>"2", "supp-data"=>"2"}
  • {"scanned-page-browse"=>"10", "month"=>"4", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"3", "unique-ip"=>"1", "pdf"=>"0", "year"=>"2008", "figure"=>"31", "scanned-summary"=>"17", "supp-data"=>"24"}
  • {"month"=>"5", "scanned-page-browse"=>"11", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"1", "year"=>"2008", "pdf"=>"1", "unique-ip"=>"0", "figure"=>"36", "scanned-summary"=>"23", "supp-data"=>"25"}
  • {"scanned-page-browse"=>"3", "month"=>"6", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"1", "unique-ip"=>"0", "pdf"=>"0", "year"=>"2008", "figure"=>"13", "scanned-summary"=>"9", "supp-data"=>"7"}
  • {"month"=>"7", "scanned-page-browse"=>"7", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"0", "year"=>"2008", "pdf"=>"0", "unique-ip"=>"0", "figure"=>"25", "scanned-summary"=>"18", "supp-data"=>"14"}
  • {"scanned-page-browse"=>"6", "month"=>"8", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"0", "unique-ip"=>"0", "pdf"=>"0", "year"=>"2008", "figure"=>"14", "scanned-summary"=>"8", "supp-data"=>"10"}
  • {"month"=>"9", "scanned-page-browse"=>"7", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"2", "year"=>"2008", "pdf"=>"1", "unique-ip"=>"4", "figure"=>"22", "scanned-summary"=>"8", "supp-data"=>"13"}
  • {"scanned-page-browse"=>"0", "month"=>"10", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"12", "unique-ip"=>"15", "pdf"=>"6", "year"=>"2008", "figure"=>"5", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"month"=>"11", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"3", "full-text"=>"9", "year"=>"2008", "pdf"=>"5", "unique-ip"=>"14", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"12", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"16", "unique-ip"=>"13", "pdf"=>"4", "year"=>"2008", "figure"=>"10", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"1", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"8", "year"=>"2009", "pdf"=>"4", "unique-ip"=>"8", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"2", "cited-by"=>"0", "abstract"=>"2", "full-text"=>"6", "unique-ip"=>"10", "pdf"=>"5", "year"=>"2009", "figure"=>"2", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"3", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"15", "year"=>"2009", "pdf"=>"9", "unique-ip"=>"11", "figure"=>"1", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"4", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"13", "unique-ip"=>"11", "pdf"=>"3", "year"=>"2009", "figure"=>"1", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"5", "scanned-page-browse"=>"0", "cited-by"=>"1", "abstract"=>"0", "full-text"=>"8", "year"=>"2009", "pdf"=>"7", "unique-ip"=>"8", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"scanned-page-browse"=>"0", "month"=>"6", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"13", "unique-ip"=>"15", "pdf"=>"9", "year"=>"2009", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"7", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"2", "full-text"=>"11", "year"=>"2009", "pdf"=>"4", "unique-ip"=>"13", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"8", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"12", "unique-ip"=>"8", "pdf"=>"3", "year"=>"2009", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"1"}
  • {"month"=>"9", "scanned-page-browse"=>"0", "cited-by"=>"1", "abstract"=>"0", "full-text"=>"10", "year"=>"2009", "pdf"=>"5", "unique-ip"=>"10", "figure"=>"2", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"10", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"2", "unique-ip"=>"3", "pdf"=>"1", "year"=>"2009", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"11", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"7", "year"=>"2009", "pdf"=>"16", "unique-ip"=>"11", "figure"=>"0", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"scanned-page-browse"=>"0", "month"=>"12", "cited-by"=>"0", "abstract"=>"1", "full-text"=>"9", "unique-ip"=>"11", "pdf"=>"8", "year"=>"2009", "figure"=>"1", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"month"=>"6", "scanned-page-browse"=>"0", "cited-by"=>"0", "abstract"=>"0", "full-text"=>"6", "year"=>"2012", "pdf"=>"3", "unique-ip"=>"4", "figure"=>"2", "scanned-summary"=>"0", "supp-data"=>"0"}
  • {"unique-ip"=>"8", "full-text"=>"11", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2012", "month"=>"7"}
  • {"unique-ip"=>"4", "full-text"=>"5", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2012", "month"=>"8"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2012", "month"=>"9"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2012", "month"=>"10"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2012", "month"=>"12"}
  • {"unique-ip"=>"3", "full-text"=>"4", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"1"}
  • {"unique-ip"=>"4", "full-text"=>"4", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"2"}
  • {"unique-ip"=>"5", "full-text"=>"3", "pdf"=>"4", "abstract"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"3"}
  • {"unique-ip"=>"3", "full-text"=>"0", "pdf"=>"3", "abstract"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"4"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2012", "month"=>"11"}
  • {"unique-ip"=>"1", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"5"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"6"}
  • {"unique-ip"=>"5", "full-text"=>"6", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"7"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"8"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"10"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"11"}
  • {"unique-ip"=>"2", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2013", "month"=>"12"}
  • {"unique-ip"=>"2", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"1"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"3"}
  • {"unique-ip"=>"3", "full-text"=>"1", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"5"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"6"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"4"}
  • {"unique-ip"=>"5", "full-text"=>"4", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"7"}
  • {"unique-ip"=>"10", "full-text"=>"6", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"2", "year"=>"2014", "month"=>"8"}
  • {"unique-ip"=>"4", "full-text"=>"1", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2014", "month"=>"9"}
  • {"unique-ip"=>"9", "full-text"=>"7", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2014", "month"=>"10"}
  • {"unique-ip"=>"3", "full-text"=>"1", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2014", "month"=>"11"}
  • {"unique-ip"=>"6", "full-text"=>"4", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2014", "month"=>"12"}
  • {"unique-ip"=>"4", "full-text"=>"5", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2015", "month"=>"1"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"2"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"3"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"4", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"4"}
  • {"unique-ip"=>"2", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"4", "supp-data"=>"1", "cited-by"=>"1", "year"=>"2015", "month"=>"5"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"6"}
  • {"unique-ip"=>"6", "full-text"=>"6", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"7"}
  • {"unique-ip"=>"6", "full-text"=>"3", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"8"}
  • {"unique-ip"=>"7", "full-text"=>"5", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"9"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"10"}
  • {"unique-ip"=>"9", "full-text"=>"5", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"4", "year"=>"2015", "month"=>"11"}
  • {"unique-ip"=>"7", "full-text"=>"6", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2015", "month"=>"12"}
  • {"unique-ip"=>"10", "full-text"=>"8", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"1"}
  • {"unique-ip"=>"8", "full-text"=>"5", "pdf"=>"4", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"2"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"4"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"3", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"5"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"6"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"7"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"8"}
  • {"unique-ip"=>"5", "full-text"=>"2", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"1", "year"=>"2016", "month"=>"9"}
  • {"unique-ip"=>"6", "full-text"=>"5", "pdf"=>"5", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"10"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"11"}
  • {"unique-ip"=>"6", "full-text"=>"6", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2016", "month"=>"12"}
  • {"unique-ip"=>"3", "full-text"=>"4", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"1"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"2"}
  • {"unique-ip"=>"4", "full-text"=>"5", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"3"}
  • {"unique-ip"=>"2", "full-text"=>"2", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"4"}
  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"5"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"8"}
  • {"unique-ip"=>"4", "full-text"=>"5", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"9"}
  • {"unique-ip"=>"5", "full-text"=>"4", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"10"}
  • {"unique-ip"=>"4", "full-text"=>"4", "pdf"=>"1", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"11"}
  • {"unique-ip"=>"7", "full-text"=>"10", "pdf"=>"2", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2017", "month"=>"12"}
  • {"unique-ip"=>"1", "full-text"=>"1", "pdf"=>"0", "abstract"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"1"}
  • {"unique-ip"=>"4", "full-text"=>"4", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"1"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"4"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"6"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"5"}
  • {"unique-ip"=>"3", "full-text"=>"4", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"8"}
  • {"unique-ip"=>"2", "full-text"=>"6", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"9"}
  • {"unique-ip"=>"5", "full-text"=>"10", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"10"}
  • {"unique-ip"=>"5", "full-text"=>"2", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"2", "cited-by"=>"0", "year"=>"2018", "month"=>"12"}
  • {"unique-ip"=>"5", "full-text"=>"4", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2018", "month"=>"11"}
  • {"unique-ip"=>"1", "full-text"=>"2", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"2"}
  • {"unique-ip"=>"3", "full-text"=>"3", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"3"}
  • {"unique-ip"=>"2", "full-text"=>"3", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"4"}
  • {"unique-ip"=>"9", "full-text"=>"9", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"1", "year"=>"2019", "month"=>"5"}
  • {"unique-ip"=>"12", "full-text"=>"12", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"4", "cited-by"=>"0", "year"=>"2019", "month"=>"8"}
  • {"unique-ip"=>"6", "full-text"=>"9", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2019", "month"=>"9"}
  • {"unique-ip"=>"11", "full-text"=>"10", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2019", "month"=>"10"}
  • {"unique-ip"=>"8", "full-text"=>"3", "pdf"=>"7", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"1", "cited-by"=>"0", "year"=>"2019", "month"=>"12"}
  • {"unique-ip"=>"17", "full-text"=>"18", "pdf"=>"4", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"4", "year"=>"2020", "month"=>"2"}
  • {"unique-ip"=>"6", "full-text"=>"5", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"3"}
  • {"unique-ip"=>"9", "full-text"=>"8", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"4"}
  • {"unique-ip"=>"10", "full-text"=>"11", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"5"}
  • {"unique-ip"=>"6", "full-text"=>"5", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"6"}
  • {"unique-ip"=>"2", "full-text"=>"2", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"7"}
  • {"unique-ip"=>"3", "full-text"=>"2", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"8"}
  • {"unique-ip"=>"4", "full-text"=>"1", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"3", "cited-by"=>"0", "year"=>"2020", "month"=>"9"}
  • {"unique-ip"=>"5", "full-text"=>"3", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"10"}

Relative Metric

{"start_date"=>"2008-01-01T00:00:00Z", "end_date"=>"2008-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences", "average_usage"=>[324, 674, 863, 1015, 1146, 1259, 1360, 1452, 1540, 1621, 1704, 1776, 1843, 1905, 1968, 2029, 2097, 2162, 2233, 2289, 2352, 2412, 2476, 2538, 2601, 2655, 2714, 2777, 2841, 2894, 2946, 2998, 3047, 3103, 3151, 3201, 3258, 3317, 3369, 3424, 3471, 3521, 3583, 3625, 3687, 3743, 3788, 3838, 3896, 3953, 4015, 4075, 4148, 4201, 4275, 4347, 4420, 4486, 4535, 4592, 4660, 4731, 4792, 4845, 4901, 4971, 5027, 5089, 5148, 5200, 5261, 5318, 5374]}, {"subject_area"=>"/Biology and life sciences/Cell biology", "average_usage"=>[303, 628, 827, 976, 1105, 1222, 1321, 1406, 1482, 1564, 1639, 1713, 1784, 1851, 1915, 1966, 2020, 2080, 2138, 2203, 2258, 2315, 2379, 2437, 2492, 2556, 2613, 2670, 2726, 2785, 2834, 2886, 2948, 2988, 3037, 3089, 3140, 3179, 3236, 3283, 3340, 3390, 3438, 3487, 3541, 3586, 3642, 3707, 3754, 3805, 3853, 3897, 3956, 4016, 4081, 4152, 4218, 4258, 4319, 4378, 4442, 4487, 4536, 4589, 4635, 4689, 4754, 4807, 4863, 4920, 4982, 5042, 5094]}, {"subject_area"=>"/Biology and life sciences/Neuroscience", "average_usage"=>[338, 679, 872, 1005, 1108, 1244, 1356, 1421, 1484, 1546, 1628, 1707, 1775, 1859, 1916, 1976, 2044, 2114, 2190, 2253, 2325, 2374, 2408, 2458, 2513, 2573, 2623, 2682, 2718, 2777, 2837, 2876, 2922, 2968, 3010, 3058, 3099, 3147, 3181, 3235, 3333, 3392, 3454, 3507, 3559, 3616, 3668, 3724, 3787, 3845, 3883, 3933, 3989, 4046, 4100, 4161, 4251, 4285, 4355, 4437, 4483, 4538, 4572, 4632, 4687, 4738, 4785, 4834, 4905, 4967, 5035, 5102, 5163, 5198]}, {"subject_area"=>"/Computer and information sciences", "average_usage"=>[339, 724, 899, 1082, 1207, 1287, 1387, 1492, 1620, 1704, 1778, 1868, 1917, 1973, 2046, 2095, 2185, 2232, 2275, 2327, 2363, 2404, 2469, 2530, 2615, 2652, 2721, 2770, 2845, 2897, 2939, 2975, 3033, 3084, 3137, 3194, 3256, 3322, 3364, 3419, 3462, 3512, 3586, 3639, 3696, 3760, 3830, 3897, 3962, 4036, 4086, 4124, 4170, 4220, 4272, 4331, 4406, 4478, 4536, 4577, 4639, 4707, 4750, 4795, 4850, 4935, 5033, 5113, 5169, 5210, 5264, 5315, 5356, 5403]}, {"subject_area"=>"/Computer and information sciences/Neural networks", "average_usage"=>[372, 657, 846, 1068, 1166, 1238, 1308, 1348, 1384, 1478, 1546, 1610, 1665, 1707, 1744, 1812, 1859, 1901, 1943, 2037, 2084, 2137, 2189, 2255, 2304, 2364, 2410, 2448, 2480, 2512, 2545, 2571, 2615, 2649, 2694, 2751, 2834, 2877, 2946, 3025, 3074, 3122, 3178, 3253, 3344, 3440, 3476, 3495, 3520, 3540, 3571, 3633, 3698, 3727, 4030, 4059, 4090, 4122, 4171, 4363, 4393, 4431, 4477, 4538, 4573, 4607, 4646, 4704, 4731, 4765, 4831, 4872, 4923, 4995]}, {"subject_area"=>"/Physical sciences", "average_usage"=>[316, 648, 828, 974, 1107, 1224, 1324, 1403, 1481, 1567, 1645, 1736, 1798, 1846, 1908, 1967, 2031, 2088, 2149, 2201, 2260, 2305, 2376, 2434, 2491, 2538, 2598, 2657, 2710, 2757, 2815, 2860, 2907, 2972, 3022, 3070, 3113, 3157, 3213, 3267, 3326, 3388, 3427, 3493, 3550, 3612, 3666, 3715, 3775, 3836, 3900, 3978, 4042, 4105, 4156, 4235, 4314, 4370, 4441, 4511, 4615, 4676, 4744, 4791, 4849, 4915, 4982, 5035, 5099, 5173, 5228, 5303, 5352]}]}
Loading … Spinner
There are currently no alerts