The Detection of Orientation Continuity and Discontinuity by Cat V1 Neurons
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{"title"=>"The detection of orientation continuity and discontinuity by cat V1 neurons", "type"=>"journal", "authors"=>[{"first_name"=>"Tao", "last_name"=>"Xu", "scopus_author_id"=>"56688974300"}, {"first_name"=>"Ling", "last_name"=>"Wang", "scopus_author_id"=>"56044320800"}, {"first_name"=>"Xue Mei", "last_name"=>"Song", "scopus_author_id"=>"23487198300"}, {"first_name"=>"Chao Yi", "last_name"=>"Li", "scopus_author_id"=>"7501678463"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-84894301436", "pui"=>"372437843", "doi"=>"10.1371/journal.pone.0079723", "sgr"=>"84894301436", "pmid"=>"24278163"}, "id"=>"1298acf1-3b96-30ba-9bc3-551048b6cca1", "abstract"=>"The orientation tuning properties of the non-classical receptive field (nCRF or \"surround\") relative to that of the classical receptive field (CRF or \"center\") were tested for 119 neurons in the cat primary visual cortex (V1). The stimuli were concentric sinusoidal gratings generated on a computer screen with the center grating presented at an optimal orientation to stimulate the CRF and the surround grating with variable orientations stimulating the nCRF. Based on the presence or absence of surround suppression, measured by the suppression index at the optimal orientation of the cells, we subdivided the neurons into two categories: surround-suppressive (SS) cells and surround-non-suppressive (SN) cells. When stimulated with an optimally oriented grating centered at CRF, the SS cells showed increasing surround suppression when the stimulus grating was expanded beyond the boundary of the CRF, whereas for the SN cells, expanding the stimulus grating beyond the CRF caused no suppression of the center response. For the SS cells, strength of surround suppression was dependent on the relative orientation between CRF and nCRF: an iso-orientation grating over center and surround at the optimal orientation evoked strongest suppression and a surround grating orthogonal to the optimal center grating evoked the weakest or no suppression. By contrast, the SN cells showed slightly increased responses to an iso-orientation stimulus and weak suppression to orthogonal surround gratings. This iso-/orthogonal orientation selectivity between center and surround was analyzed in 22 SN and 97 SS cells, and for the two types of cells, the different center-surround orientation selectivity was dependent on the suppressive strength of the cells. We conclude that SN cells are suitable to detect orientation continuity or similarity between CRF and nCRF, whereas the SS cells are adapted to the detection of discontinuity or differences in orientation between CRF and nCRF.", "link"=>"http://www.mendeley.com/research/detection-orientation-continuity-discontinuity-cat-v1-neurons-1", "reader_count"=>9, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Student > Ph. D. Student"=>1, "Student > Postgraduate"=>1, "Student > Master"=>3, "Student > Bachelor"=>1, "Lecturer"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Student > Ph. D. Student"=>1, "Student > Postgraduate"=>1, "Student > Master"=>3, "Student > Bachelor"=>1, "Lecturer"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Agricultural and Biological Sciences"=>3, "Medicine and Dentistry"=>1, "Neuroscience"=>3, "Psychology"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Neuroscience"=>{"Neuroscience"=>3}, "Psychology"=>{"Psychology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>3}, "Unspecified"=>{"Unspecified"=>1}}, "group_count"=>0}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1291257"], "description"=>"<p>The solid circles represent data from the SN cells (n = 11), and the open circles represent data from the SS cells (n = 62). The positions of the circles on the <i>x</i>-axis indicate the difference between the center optimal orientation and surround minimally suppressed orientation, and the position on the <i>y</i>-axis indicate the strength of the surround effect on the center response. The horizontal line represents response amplitude to the center stimulus alone, the circles underneath the line indicate the amplitude (in %) of the suppressive effect, and those above the line indicate the amplitude (in %) of the facilitative effect when the surround stimuli was oriented in the minimally suppressive orientation.</p>", "links"=>[], "tags"=>["differences", "preferred", "minimally", "suppressive"], "article_id"=>859070, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Tao Xu", "Ling Wang", "Xue-Mei Song", "Chao-Yi Li"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0079723.g005", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_distribution_of_differences_between_the_preferred_orientation_of_center_and_minimally_suppressive_orientation_of_the_surround_/859070", "title"=>"The distribution of differences between the preferred orientation of center and minimally suppressive orientation of the surround.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-11-21 03:02:16"}
  • {"files"=>["https://ndownloader.figshare.com/files/1291254"], "description"=>"<p>The solid circles represent the orientation tuning of the center; 0° represents the optimal orientation for clarity. The open circles show the tuning of the surround when the center was stimulated with an optimally oriented grating. The error bars areSEM. (A) The cell was identical to that shown in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0079723#pone-0079723-g001\" target=\"_blank\">Fig. 1A</a>, thus showing no surround suppression (SI = 0) in the size-tuning curve. A slight facilitation is shown when the surround grating was drifting in the preferred orientation/direction (0° on the <i>x</i>-axis) and a suppression drop occurred as the surround orientation was 45° away from the preferred orientation. (B) The neuron was identical to that in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0079723#pone-0079723-g001\" target=\"_blank\">Fig. 1B</a>, thus showing significant suppression (SI = 0.65) in the size-tuning test. The surround suppression was maximal in the optimal orientation/direction (0°) and weaker in the orthogonal orientations (90° on the abscissa). (C) The neuron showed strong surround suppression around the optimal orientation/direction and significant facilitation in the orthogonal orientations. (D) The cell (SI = 0.67, size-tuning test) revealed a moderate-strength surround suppression to all surround orientations with a maximal suppression at −30°.</p>", "links"=>[], "tags"=>["tuning", "curves"], "article_id"=>859067, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Tao Xu", "Ling Wang", "Xue-Mei Song", "Chao-Yi Li"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0079723.g002", "stats"=>{"downloads"=>1, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_orientation_tuning_curves_of_the_center_and_surround_for_four_representative_neurons_/859067", "title"=>"The orientation tuning curves of the center and surround for four representative neurons.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-11-21 03:02:16"}
  • {"files"=>["https://ndownloader.figshare.com/files/1291253"], "description"=>"<p>The response, in spikes per second (<i>y</i>-axis), is plotted against the diameter of the circular grating patch (<i>x</i>-axis). Solid lines indicate the best-fitting difference of integrals of the Gaussian functions. The arrows indicate stimulus diameter at which the responses were maximal and/or became asymptotic. (A) A cell exhibiting a no-suppression surround (SI = 0). (B) A cell showing a suppressive surround (SI = 0.65). The error bars representSEM.</p>", "links"=>[], "tags"=>["curves"], "article_id"=>859066, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Tao Xu", "Ling Wang", "Xue-Mei Song", "Chao-Yi Li"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0079723.g001", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Size_tuning_curves_obtained_from_two_representative_cells_/859066", "title"=>"Size-tuning curves obtained from two representative cells.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-11-21 03:02:16"}
  • {"files"=>["https://ndownloader.figshare.com/files/1291256"], "description"=>"<p>The black columns indicate the proportion of cells with an OSI0, and the gray columns indicate the proportion of cells with an OSI0. Within the 22 SN neurons, there were 14 cells (64%) with an OSI0 and 8 (36%) cells with an OSI0. Comparing within the SS neuron group, the proportion was 19% (18/97) with an OSI0 and 81% (79/97) with an OSI0.</p>", "links"=>[], "tags"=>["osi", "sn", "ss", "neuron"], "article_id"=>859069, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Tao Xu", "Ling Wang", "Xue-Mei Song", "Chao-Yi Li"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0079723.g004", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_A_comparison_of_OSI_between_the_SN_and_SS_neuron_groups_/859069", "title"=>"A comparison of OSI between the SN and SS neuron groups.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-11-21 03:02:16"}
  • {"files"=>["https://ndownloader.figshare.com/files/1291255"], "description"=>"<p>Each point represents data from one cell. The <i>x</i>-axis indicates the SI in the size-tuning tests, the <i>y</i>-axis indicates the surround iso-/orthogonal orientation selectivity index (OSI). The straight line is a linear regression of the data points. A significant correlation was observed between SI and OSI (r = 0.59, P0.001).</p>", "links"=>[], "tags"=>["selectivity", "suppression"], "article_id"=>859068, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Tao Xu", "Ling Wang", "Xue-Mei Song", "Chao-Yi Li"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0079723.g003", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_relationship_between_the_surround_iso_orthogonal_orientation_selectivity_index_OSI_and_suppression_index_SI_/859068", "title"=>"The relationship between the surround iso/orthogonal orientation selectivity index (OSI) and suppression index (SI).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-11-21 03:02:16"}
  • {"files"=>["https://ndownloader.figshare.com/files/1291258"], "description"=>"<p>The surround response amplitude of each neuron was normalized relative to the center response. The horizontal line indicates the response to the preferred center stimulus alone. (A) The averaged surround tuning curve of 22 SN cells shows that the surround stimuli have no significant effects at most orientations but display significant facilitation in the neuron's preferred orientation/direction. (B) The averaged surround tuning curve of 97 SS cells. The neurons were maximally suppressed by surround stimuli in the neuron's preferred orientation/direction and were least suppressive in the orthogonal orientation/direction (90°).</p>", "links"=>[], "tags"=>["sn", "ss"], "article_id"=>859071, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Tao Xu", "Ling Wang", "Xue-Mei Song", "Chao-Yi Li"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0079723.g006", "stats"=>{"downloads"=>0, "page_views"=>1, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_A_population_analysis_of_the_orientation_direction_dependent_surround_effects_of_the_SN_and_SS_neurons_/859071", "title"=>"A population analysis of the orientation/direction-dependent surround effects of the SN and SS neurons.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-11-21 03:02:16"}

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  • {"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"=>"10"}
  • {"unique-ip"=>"7", "full-text"=>"8", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2020", "month"=>"11"}

Relative Metric

{"start_date"=>"2013-01-01T00:00:00Z", "end_date"=>"2013-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences", "average_usage"=>[269, 466, 588, 697, 800, 896, 988, 1076, 1165, 1254, 1340, 1417]}, {"subject_area"=>"/Biology and life sciences/Anatomy", "average_usage"=>[248, 440, 562, 666, 765, 856, 944, 1028, 1112, 1198, 1282, 1362, 1430]}, {"subject_area"=>"/Biology and life sciences/Anatomy and physiology", "average_usage"=>[256, 428]}, {"subject_area"=>"/Biology and life sciences/Neuroscience", "average_usage"=>[261, 444, 554, 655, 748, 834, 923, 1004, 1089, 1170, 1244, 1315, 1380]}, {"subject_area"=>"/Engineering and technology", "average_usage"=>[254, 440, 558, 675, 785, 883, 972, 1061, 1154, 1248, 1336, 1414, 1489]}, {"subject_area"=>"/Engineering and technology/Signal processing", "average_usage"=>[248, 406, 514, 603, 689, 787, 859, 930, 1027, 1083, 1131, 1201, 1270]}, {"subject_area"=>"/Medicine and health sciences/Anatomy", "average_usage"=>[248, 441, 564, 668, 769, 859, 948, 1034, 1117, 1202, 1290, 1368, 1437]}, {"subject_area"=>"/Medicine and health sciences/Anesthesiology", "average_usage"=>[180, 350, 471, 550, 617, 683, 773, 872, 926, 975, 1053, 1167, 1248, 1310]}, {"subject_area"=>"/Medicine and health sciences/Diagnostic medicine", "average_usage"=>[244, 425, 535, 636, 728, 814, 900, 982, 1063, 1139, 1221, 1296, 1361]}, {"subject_area"=>"/Medicine and health sciences/Surgical and invasive medical procedures", "average_usage"=>[223, 396, 511, 599, 690, 775, 859, 936, 1012, 1090, 1168, 1237, 1299]}]}
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