{"id":67927,"date":"2025-11-11T22:42:34","date_gmt":"2025-11-11T22:42:34","guid":{"rendered":"https:\/\/psychologydictionary.ae\/matiere-blanche-2\/"},"modified":"2025-11-11T22:42:34","modified_gmt":"2025-11-11T22:42:34","slug":"matiere-blanche-2","status":"publish","type":"post","link":"https:\/\/psychologydictionary.ae\/fr\/matiere-blanche-2\/","title":{"rendered":"Mati\u00e8re blanche"},"content":{"rendered":"<p>L\u2019un des membres des zones du syst\u00e8me nerveux central principalement compos\u00e9es d\u2019axones my\u00e9linis\u00e9s, \u00e9galement appel\u00e9s faisceaux. Longtemps consid\u00e9r\u00e9e comme un tissu passif, la substance blanche affecte l\u2019apprentissage et le fonctionnement du cerveau en modulant la distribution des potentiels d\u2019action, en agissant comme des relais et en coordonnant la communication entre diff\u00e9rentes r\u00e9gions c\u00e9r\u00e9brales. La substance blanche doit son nom \u00e0 son apparence relativement l\u00e9g\u00e8re, en raison de la teneur en lipides de la my\u00e9line. Sa couleur blanche dans les \u00e9chantillons finis est due \u00e0 sa conservation habituelle dans le formald\u00e9hyde. Sinon, elle para\u00eet rose blanc \u00e0 l\u2019\u0153il nu, puisque la my\u00e9line est principalement compos\u00e9e de tissu lipidique parsem\u00e9 de capillaires.    <\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019un des membres des zones du syst\u00e8me nerveux central principalement compos\u00e9es d\u2019axones my\u00e9linis\u00e9s, \u00e9galement appel\u00e9s faisceaux. Longtemps consid\u00e9r\u00e9e comme un tissu passif, la substance blanche affecte l\u2019apprentissage et le fonctionnement du cerveau en modulant la distribution des potentiels d\u2019action, en agissant comme des relais et en coordonnant la communication entre diff\u00e9rentes r\u00e9gions c\u00e9r\u00e9brales. La substance [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[211],"tags":[],"class_list":["post-67927","post","type-post","status-publish","format-standard","hentry","category-concepts-psychologiques-cles-en-psychologie-physiologique"],"_links":{"self":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/posts\/67927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/comments?post=67927"}],"version-history":[{"count":0,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/posts\/67927\/revisions"}],"wp:attachment":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/media?parent=67927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/categories?post=67927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/tags?post=67927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}