{"id":10139,"date":"2025-09-29T22:20:54","date_gmt":"2025-09-29T20:20:54","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/des-dommages-neurologiques-durables-causes-par-un-stress-repete-peuvent-expliquer-les-schemas-de-risque-de-dependance\/"},"modified":"2025-09-29T22:20:55","modified_gmt":"2025-09-29T20:20:55","slug":"des-dommages-neurologiques-durables-causes-par-un-stress-repete-peuvent-expliquer-les-schemas-de-risque-de-dependance","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/des-dommages-neurologiques-durables-causes-par-un-stress-repete-peuvent-expliquer-les-schemas-de-risque-de-dependance\/","title":{"rendered":"Des dommages neurologiques durables caus\u00e9s par un stress r\u00e9p\u00e9t\u00e9 peuvent expliquer les sch\u00e9mas de risque de d\u00e9pendance"},"content":{"rendered":"<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/study-explores-link-be-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2025\/study-explores-link-be-1.jpg\" data-sub-html=\"A recent study by Ole Miss researchers indicates that the brain responds to repeated instances of stress in lasting ways. Some of these reactions could make people more susceptible to substance abuse. Credit: Graphic by Jordan Thweatt\/University Marketing and Communications\">\n<figure class=\"article-img\">\n<\/figure><\/div>\n<\/div>\n<p>Des cas extr\u00eames de stress peuvent provoquer des changements durables au cerveau lui-m\u00eame. Cela pourrait laisser certaines personnes plus vuln\u00e9rables \u00e0 la d\u00e9pendance, conclut une \u00e9tude de l&rsquo;Universit\u00e9 du Mississippi.<\/p>\n<p>La science a longtemps associ\u00e9 le stress au risque d&rsquo;abus de substances, mais l&rsquo;\u00e9tude OLE Miss a peut-\u00eatre trouv\u00e9 une raison de la connexion. Alberto del Arco Gonzalez, professeur agr\u00e9g\u00e9 de sant\u00e9, de science de l&rsquo;exercice et de gestion des loisirs, et Yixin Chen, pr\u00e9sident et professeur de sciences informatiques et d&rsquo;information, ont publi\u00e9 leurs r\u00e9sultats dans la revue <i>eneuro<\/i>.<\/p>\n<p>L&rsquo;informatique de l&rsquo;\u00e9tude pourrait expliquer pourquoi certaines personnes sont plus vuln\u00e9rables aux troubles de la consommation de substances et indiquent une meilleure pr\u00e9vention ou un traitement plus cibl\u00e9.<\/p>\n<p>\u00ab\u00a0Apr\u00e8s cette exp\u00e9rience de stress r\u00e9p\u00e9t\u00e9, quelque chose change dans le cerveau\u00a0\u00bb, a d\u00e9clar\u00e9 Del Arco. \u00abLe stress est une r\u00e9ponse physiologique. Nous sommes cens\u00e9s souligner de temps en temps, puis nous en retirer.<\/p>\n<p>\u00ab\u00a0Mais ce type de stress r\u00e9p\u00e9t\u00e9 et intense produit des effets qui pourraient persister pendant longtemps. C&rsquo;est ce qui est important, car cela peut \u00eatre le d\u00e9but d&rsquo;une transition d&rsquo;un cerveau sain \u00e0 un cerveau avec une d\u00e9pendance, un trouble de la consommation de substances ou un autre trouble psychiatrique.\u00a0\u00bb<\/p>\n<p>L&rsquo;\u00e9quipe de recherche a utilis\u00e9 des mod\u00e8les animaux pour \u00e9tudier deux parties du cerveau: le cortex pr\u00e9frontal, connu sous le nom de centre de d\u00e9cision, et la zone tegmentale ventrale, qui influence la motivation et la volont\u00e9 de chercher des r\u00e9compenses.<\/p>\n<p>Apr\u00e8s une s\u00e9rie d&rsquo;\u00e9v\u00e9nements stressants, l&rsquo;activit\u00e9 a diminu\u00e9 dans le cortex pr\u00e9frontal, ce qui rend potentiellement le cerveau moins capable de prendre des d\u00e9cisions \u00e9clair\u00e9es. Dans le m\u00eame temps, l&rsquo;activit\u00e9 dans la zone tegmentale ventrale a augment\u00e9, provoquant un pic dans le d\u00e9sir d&rsquo;une r\u00e9compense.<\/p>\n<p>En bref, le stress pourrait rendre les comportements \u00e0 risque tels que la substance abusive plus tentante et plus difficile \u00e0 r\u00e9sister.<\/p>\n<p>\u00ab\u00a0L&rsquo;id\u00e9e est que ces processus vous rendent plus enclin \u00e0 d\u00e9g\u00e9n\u00e9rer dans la consommation de substances\u00a0\u00bb, a-t-il d\u00e9clar\u00e9. \u00ab\u00a0Le stress diminue le pourcentage de personnes qui peuvent simplement s&rsquo;\u00e9loigner des m\u00e9dicaments et augmente le risque de d\u00e9velopper un trouble de la consommation de substances.\u00a0\u00bb<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/study-explores-link-be.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/study-explores-link-be.jpg\" data-sub-html=\"Experimental protocol, electrode placement, and DS task performance. Credit: &lt;i&gt;eNeuro&lt;\/i&gt; (2025). DOI: 10.1523\/eneuro.0229-25.2025\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/rvh-synergie.org\/actualites\/wp-content\/uploads\/2025\/09\/1759177254_59_Des-dommages-neurologiques-durables-causes-par-un-stress-repete-peuvent.jpg\" alt=\"L'\u00e9tude explore le lien entre le stress et le risque de d\u00e9pendance\" title=\"Protocole exp\u00e9rimental, placement des \u00e9lectrodes et performances de la t\u00e2che DS. Cr\u00e9dit: Eneuro (2025). Doi: 10.1523 \/ eneuro.0229-25.2025\"><br \/>\n                     <\/figure>\n<\/p><\/div>\n<\/div>\n<p>Le projet a oblig\u00e9 Del Arco \u00e0 analyser une grande quantit\u00e9 de donn\u00e9es. Au cours d&rsquo;une ann\u00e9e, Chen a supervis\u00e9 une \u00e9quipe d&rsquo;\u00e9tudiants de premier cycle qui ont d\u00e9velopp\u00e9 et test\u00e9 un algorithme d&rsquo;apprentissage automatique pour ce faire.<\/p>\n<p>Impliquer des \u00e9tudiants des majors en informatique et en sciences des donn\u00e9es offre aux chercheurs un moyen de cr\u00e9er des programmes d&rsquo;apprentissage automatique personnalis\u00e9s pour leur \u00e9tude tout en offrant aux \u00e9tudiants une application r\u00e9elle de ce qu&rsquo;ils apprennent en classe, a d\u00e9clar\u00e9 Chen.<\/p>\n<p>\u00ab\u00a0C&rsquo;est vraiment une situation gagnant-gagnant\u00a0\u00bb, a-t-il d\u00e9clar\u00e9. \u00ab\u00a0Nos \u00e9tudiants recherchent des probl\u00e8mes du monde r\u00e9el, et ce projet leur a donn\u00e9 cette opportunit\u00e9 tout en soutenant des recherches scientifiques importantes.\u00a0\u00bb<\/p>\n<p>L&rsquo;\u00e9quipe a \u00e9tudi\u00e9 les changements \u00e0 long et \u00e0 court terme dans les deux zones du cerveau. L&rsquo;activit\u00e9 dans le cortex pr\u00e9frontal peut rester diminu\u00e9e pendant au moins deux semaines, ce qui signifie que les processus d\u00e9cisionnels pourraient rester alt\u00e9r\u00e9s pendant longtemps.<\/p>\n<p>En revanche, l&rsquo;activit\u00e9 dans la zone tegmentale ventrale descend en dessous de la normale dans les semaines suivant les facteurs de stress r\u00e9p\u00e9t\u00e9s, sugg\u00e9rant ce que Del Arco a appel\u00e9 un \u00abd\u00e9ficit de r\u00e9compense\u00bb.<\/p>\n<p>\u00ab\u00a0Ce d\u00e9ficit pourrait \u00eatre li\u00e9 \u00e0 l&rsquo;id\u00e9e que la m\u00eame r\u00e9compense ne suffit plus pour satisfaire la soif\u00a0\u00bb, a-t-il d\u00e9clar\u00e9. \u00ab\u00a0Cela pourrait rendre quelqu&rsquo;un plus enclin \u00e0 l&rsquo;escalade d&rsquo;une abus de substance car il ne peut plus obtenir la r\u00e9compense.\u00a0\u00bb<\/p>\n<p>La r\u00e9ponse initiale des deux zones du cerveau et l&rsquo;impact \u00e0 long terme du stress pourraient contribuer au d\u00e9veloppement du trouble de la consommation de substances.<\/p>\n<p>\u00ab\u00a0Nous savons que le stress est associ\u00e9 \u00e0 un risque plus \u00e9lev\u00e9 de d\u00e9velopper des troubles de la consommation de substances, mais nous ne savons pas comment\u00a0\u00bb, a d\u00e9clar\u00e9 Del Arco. \u00abCes donn\u00e9es expliquent comment cela se produit en examinant la r\u00e9ponse neuronale aux indices de r\u00e9compense apr\u00e8s le stress.<\/p>\n<p>\u00ab\u00a0En savoir plus sur la biologie de la vuln\u00e9rabilit\u00e9 &#8211; dans ce cas, la vuln\u00e9rabilit\u00e9 induite par le stress &#8211; peut nous aider non seulement \u00e0 pr\u00e9venir la d\u00e9pendance mais aussi \u00e0 le traiter mieux.\u00a0\u00bb<\/p>\n<p>                                        <!-- print only --><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Des cas extr\u00eames de stress peuvent provoquer des changements durables au cerveau lui-m\u00eame. Cela pourrait<\/p>\n","protected":false},"author":1,"featured_media":10140,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[4115,410,16,2491,2807,1498,49,2153,540,92,6921,40,4393,4864],"class_list":["post-10139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-addictions","tag-causes","tag-dependance","tag-des","tag-dommages","tag-durables","tag-expliquer","tag-les","tag-neurologiques","tag-par","tag-peuvent","tag-repete","tag-risque","tag-schemas","tag-stress","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 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Des dommages neurologiques durables caus\u00e9s par un stress r\u00e9p\u00e9t\u00e9 peuvent expliquer les sch\u00e9mas de risque de d\u00e9pendance - RVH-Synergie.org<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rvh-synergie.org\/actualites\/des-dommages-neurologiques-durables-causes-par-un-stress-repete-peuvent-expliquer-les-schemas-de-risque-de-dependance\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des dommages neurologiques durables caus\u00e9s par un stress r\u00e9p\u00e9t\u00e9 peuvent expliquer les sch\u00e9mas de risque de d\u00e9pendance - RVH-Synergie.org\" \/>\n<meta property=\"og:description\" content=\"Des cas extr\u00eames de stress peuvent provoquer des changements durables au cerveau lui-m\u00eame. 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