{"id":1520,"date":"2024-10-22T20:31:22","date_gmt":"2024-10-22T18:31:22","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/une-etude-experimentale-chez-le-rat-et-lhomme-montre-que-leffort-cognitif-aiguise-lappetit-de-recompense\/"},"modified":"2024-10-22T20:31:33","modified_gmt":"2024-10-22T18:31:33","slug":"une-etude-experimentale-chez-le-rat-et-lhomme-montre-que-leffort-cognitif-aiguise-lappetit-de-recompense","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/une-etude-experimentale-chez-le-rat-et-lhomme-montre-que-leffort-cognitif-aiguise-lappetit-de-recompense\/","title":{"rendered":"Une \u00e9tude exp\u00e9rimentale chez le rat et l&rsquo;homme montre que l&rsquo;effort cognitif aiguise l&rsquo;app\u00e9tit de r\u00e9compense"},"content":{"rendered":"<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/experimental-study-in.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/experimental-study-in.jpg\" data-sub-html=\"Effects of cognitive effort without rest on cocaine self-administration. Experimental design (A), time course (B) and average in the last 3 days of self-administration (C) of number of injections in rats that performed a cognitive effort immediately before cocaine self-administration. Data are expressed as mean \u00b1 SEM (Sal-NoCE, n = 10; Sal CE n = 10; Coc-NoCE, n = 14; Coc-CE, n = 13). Two-way ANOVA followed by post hoc Tukey's test: **P &lt; 0.01 compared with Sal control; &lt;sup&gt;##&lt;\/sup&gt;P &lt; 0.01 CE vs. NoCE. Credit: &lt;i&gt;PNAS Nexus&lt;\/i&gt; (2024). https:\/\/doi.org\/10.1093\/pnasnexus\/pgae432\">\n<figure class=\"article-img\">\n<\/figure><\/div>\n<\/div>\n<p>La fatigue mentale pourrait rendre les r\u00e9compenses plus d\u00e9sirables, selon une \u00e9tude men\u00e9e sur des rats et des humains. L\u2019exercice d\u2019un effort cognitif a \u00e9t\u00e9 associ\u00e9 \u00e0 des choix malsains. Dans le pass\u00e9, le lien a \u00e9t\u00e9 expliqu\u00e9 par un affaiblissement du contr\u00f4le inhibiteur ou de la volont\u00e9.<\/p>\n<p>Marcello Solinas et ses coll\u00e8gues explorent la possibilit\u00e9 que l&rsquo;effort cognitif puisse \u00e9galement rendre plus tentants des choix malsains en augmentant la r\u00e9compense per\u00e7ue. L&rsquo;ouvrage est publi\u00e9 dans <i>Nexus PNAS<\/i>.<\/p>\n<p>Les rats qui ont accompli une t\u00e2che exigeante sur le plan cognitif se sont auto-administr\u00e9s plus de coca\u00efne que les rats qui n&rsquo;ont pas accompli une t\u00e2che exigeante sur le plan cognitif ou que les rats qui ont \u00e9t\u00e9 autoris\u00e9s \u00e0 se reposer 2 \u00e0 4 heures apr\u00e8s avoir termin\u00e9 la t\u00e2che complexe. Les humains \u00e0 qui on a confi\u00e9 une t\u00e2che qui n\u00e9cessite un effort cognitif important \u2013 supprimer la pens\u00e9e d&rsquo;un ours blanc tout en \u00e9num\u00e9rant d&rsquo;autres pens\u00e9es \u2013 ont mang\u00e9 plus de chips et ont \u00e9valu\u00e9 les chips comme ayant meilleur go\u00fbt que les t\u00e9moins qui n&rsquo;avaient pas accompli une t\u00e2che exigeante, ce qui sugg\u00e8re que l&rsquo;effort cognitif exp\u00e9rience h\u00e9donique intensifi\u00e9e des participants en mati\u00e8re de grignotage de collations sal\u00e9es et grasses.<\/p>\n<p>Pour exclure la possibilit\u00e9 que l&rsquo;effort cognitif augmente la probabilit\u00e9 que les humains portent des jugements extr\u00eames en g\u00e9n\u00e9ral, une \u00e9tude de suivi utilisant des t\u00e2ches d&rsquo;\u00e9criture difficiles et faciles a r\u00e9v\u00e9l\u00e9 que les \u00e9valuations du chocolat augmentaient apr\u00e8s un effort cognitif, mais que les \u00e9valuations de la longueur d&rsquo;un stylo ou de la luminosit\u00e9 d&rsquo;un post-it jaune ne l&rsquo;a pas fait. Les auteurs sugg\u00e8rent que cette s\u00e9quence n\u2019est pas un simple sous-produit de l\u2019\u00e9volution mais pourrait \u00eatre adaptative dans certains contextes.<\/p>\n<p>Selon les auteurs, les r\u00e9sultats ont des implications pour la gestion de la d\u00e9pendance et d\u2019autres comportements malsains.<\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\tFourni par PNAS Nexus<\/p>\n<p>                                        <!-- print only --><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La fatigue mentale pourrait rendre les r\u00e9compenses plus d\u00e9sirables, selon une \u00e9tude men\u00e9e sur des<\/p>\n","protected":false},"author":1,"featured_media":1521,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[1893,56,1892,48,1890,1894,1891,1060,210,1059,1895,47],"class_list":["post-1520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-addictions","tag-aiguise","tag-chez","tag-cognitif","tag-etude","tag-experimentale","tag-lappetit","tag-leffort","tag-lhomme","tag-montre","tag-rat","tag-recompense","tag-une","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - 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