Breakdown of local information processing may underlie isoflurane anesthesia effects
Publication Date
June 01, 2017
Authors
Patricia Wollstadt, Kristin K. Sellers, Lucas Rudelt, Viola Priesemann, et al
Volume
13
Issue
6
Pages
e1005511
DOI
https://dx.plos.org/10.1371/journal.pcbi.1005511
Publisher URL
http://journals.plos.org/ploscompbiol/article?id=10.1371%2Fjournal.pcbi.1005511
Scopus
85021701625
Mendeley
http://www.mendeley.com/research/breakdown-local-information-processing-underlie-isoflurane-anesthesia-effects
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Mendeley | Further Information

{"title"=>"Breakdown of local information processing may underlie isoflurane anesthesia effects", "type"=>"journal", "authors"=>[{"first_name"=>"Patricia", "last_name"=>"Wollstadt", "scopus_author_id"=>"55516955700"}, {"first_name"=>"Kristin K.", "last_name"=>"Sellers", "scopus_author_id"=>"55882245200"}, {"first_name"=>"Lucas", "last_name"=>"Rudelt", "scopus_author_id"=>"57194700570"}, {"first_name"=>"Viola", "last_name"=>"Priesemann", "scopus_author_id"=>"26654999600"}, {"first_name"=>"Axel", "last_name"=>"Hutt", "scopus_author_id"=>"7005116640"}, {"first_name"=>"Flavio", "last_name"=>"Fröhlich", "scopus_author_id"=>"14028443200"}, {"first_name"=>"Michael", "last_name"=>"Wibral", "scopus_author_id"=>"55973250200"}], "year"=>2017, "source"=>"PLoS Computational Biology", "identifiers"=>{"pui"=>"617153927", "pmid"=>"28570661", "doi"=>"10.1371/journal.pcbi.1005511", "issn"=>"15537358", "scopus"=>"2-s2.0-85021701625", "sgr"=>"85021701625", "isbn"=>"1111111111"}, "id"=>"4a733137-ce45-3592-85b2-03cf7301f281", "abstract"=>"The disruption of coupling between brain areas has been suggested as the mechanism underlying loss of consciousness in anesthesia. This hypothesis has been tested previously by measuring the information transfer between brain areas, and by taking reduced information transfer as a proxy for decoupling. Yet, information transfer is a function of the amount of information available in the information source—such that transfer decreases even for unchanged coupling when less source information is available. Therefore, we reconsidered past interpretations of reduced information transfer as a sign of decoupling, and asked whether impaired local information processing leads to a loss of information transfer. An important prediction of this alternative hypothesis is that changes in locally available information (signal entropy) should be at least as pronounced as changes in information transfer. We tested this prediction by recording local field potentials in two ferrets after administration of isoflurane in concentrations of 0.0%, 0.5%, and 1.0%. We found strong decreases in the source entropy under isoflurane in area V1 and the prefrontal cortex (PFC)—as predicted by our alternative hypothesis. The decrease in source entropy was stronger in PFC compared to V1. Information transfer between V1 and PFC was reduced bidirectionally, but with a stronger decrease from PFC to V1. This links the stronger decrease in information transfer to the stronger decrease in source entropy—suggesting reduced source entropy reduces information transfer. This conclusion fits the observation that the synaptic targets of isoflurane are located in local cortical circuits rather than on the synapses formed by interareal axonal projections. Thus, changes in information transfer under isoflurane seem to be a consequence of changes in local processing more than of decoupling between brain areas. We suggest that source entropy changes must be considered whenever interpreting changes in information transfer as decoupling.", "link"=>"http://www.mendeley.com/research/breakdown-local-information-processing-underlie-isoflurane-anesthesia-effects", "reader_count"=>29, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Researcher"=>10, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>3, "Student > Master"=>4, "Other"=>1, "Student > Bachelor"=>5, "Lecturer > Senior Lecturer"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Researcher"=>10, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>3, "Student > Master"=>4, "Other"=>1, "Student > Bachelor"=>5, "Lecturer > Senior Lecturer"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>1, "Unspecified"=>1, "Biochemistry, Genetics and Molecular Biology"=>2, "Agricultural and Biological Sciences"=>5, "Medicine and Dentistry"=>3, "Neuroscience"=>11, "Physics and Astronomy"=>1, "Psychology"=>2, "Computer Science"=>2, "Linguistics"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>3}, "Neuroscience"=>{"Neuroscience"=>11}, "Physics and Astronomy"=>{"Physics and Astronomy"=>1}, "Psychology"=>{"Psychology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>5}, "Computer Science"=>{"Computer Science"=>2}, "Linguistics"=>{"Linguistics"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>2}, "Unspecified"=>{"Unspecified"=>1}}, "group_count"=>0}

Scopus | Further Information

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