{"id":144,"date":"2015-03-11T15:20:52","date_gmt":"2015-03-11T14:20:52","guid":{"rendered":"http:\/\/babel.isa.uma.es\/kipr\/?p=144"},"modified":"2015-07-16T15:28:58","modified_gmt":"2015-07-16T14:28:58","slug":"on-the-process-of-the-brain-for-detecting-similarities-with-a-proposal-for-its-structure-and-its-timing","status":"publish","type":"post","link":"https:\/\/babel.isa.uma.es\/kipr\/?p=144","title":{"rendered":"On the process of the brain for detecting similarities, with a proposal for its structure and its timing"},"content":{"rendered":"<h4>Qingfei Chen, Xiuling Liang, Peng Li, Chun Ye, Fuhong Li, Yi Lei, Hong Li, 2015, <strong>The processing of perceptual similarity with different features or spatial relations as revealed by P2\/P300 amplitude<\/strong>, International Journal of Psychophysiology, Volume 95, Issue 3, March 2015, Pages 379-387, ISSN 0167-8760, <a href=\"http:\/\/dx.doi.org\/10.1016\/j.ijpsycho.2015.01.009\" target=\"_blank\">DOI: 10.1016\/j.ijpsycho.2015.01.009<\/a>.<\/h4>\n<blockquote><p>Visual features such as \u201ccolor\u201d and spatial relations such as \u201cabove\u201d or \u201cbeside\u201d have complex effects on similarity and difference judgments. We examined the relative impact of features and spatial relations on similarity and difference judgments via ERPs in an S1\u2013S2 paradigm. Subjects were required to compare a remembered geometric shape (S1) with a second one (S2), and made a \u201chigh\u201d or \u201clow\u201d judgment of either similarity or difference in separate blocks of trials. We found three main differences that suggest that the processing of features and spatial relations engages distinct neural processes. The first difference is a P2 effect in fronto-central regions which is sensitive to the presence of a feature difference. The second difference is a P300 in centro-parietal regions that is larger for difference judgments than for similarity judgments. Finally, the P300 effect elicited by feature differences was larger relative to spatial relation differences. These results supported the view that similarity judgments involve structural alignment rather than simple feature and relation matches, and furthermore, indicate the similarity judgment could be divided into three phases: feature or relation comparison (P2), structural alignment (P3 at 300\u2013400&#xa0;ms), and categorization (P3 at 450\u2013550&#xa0;ms).<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Qingfei Chen, Xiuling Liang, Peng Li, Chun Ye, Fuhong Li, Yi Lei, Hong Li, 2015, The processing of perceptual similarity <span class=\"ellipsis\">&hellip;<\/span> <span class=\"more-link-wrap\"><a href=\"https:\/\/babel.isa.uma.es\/kipr\/?p=144\" class=\"more-link\"><span>Read More &rarr;<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[62],"class_list":["post-144","post","type-post","status-publish","format-standard","hentry","category-psycho-physiological-bases-of-engineering","tag-similarity"],"_links":{"self":[{"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=\/wp\/v2\/posts\/144"}],"collection":[{"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=144"}],"version-history":[{"count":1,"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=\/wp\/v2\/posts\/144\/revisions"}],"predecessor-version":[{"id":145,"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=\/wp\/v2\/posts\/144\/revisions\/145"}],"wp:attachment":[{"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/babel.isa.uma.es\/kipr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}