Une \u00e9tude r\u00e9cente de l\u2019Universit\u00e9 de Cambridge au Royaume-Uni bouleverse la perception traditionnelle de l\u2019adolescence. Selon les chercheurs, la maturation du cerveau ne s\u2019arr\u00eaterait pas \u00e0 la vingtaine\u00a0: la \u00ab\u00a0\u202f fin de l\u2019adolescence c\u00e9r\u00e9brale \u202f\u00a0\u00bb interviendrait en r\u00e9alit\u00e9 vers 32 ans.<\/p>\n
L\u2019\u00e9tude distingue 5 grandes phases du cerveau humain, chacune marqu\u00e9e par des changements structurels et fonctionnels\u00a0:<\/p>\n
– 0 \u00e0 9 ans<\/strong>\u00a0: l\u2019enfance, p\u00e9riode de formation massive des connexions neuronales.<\/p>\n – 9 \u00e0 32 ans<\/strong>\u00a0: adolescence c\u00e9r\u00e9brale, phase d\u2019optimisation des connexions, maturation des r\u00e9seaux neuronaux et acquisition progressive de la stabilit\u00e9 cognitive.<\/p>\n – 32 \u00e0 66 ans<\/strong>\u00a0: \u00e2ge adulte, le cerveau atteint un plateau de maturit\u00e9, avec des r\u00e9seaux neuronaux plus stables et efficaces.<\/p>\n – 66 \u00e0 83 ans<\/strong>\u00a0: vieillissement pr\u00e9coce, d\u00e9but des modifications progressives de la connectivit\u00e9 c\u00e9r\u00e9brale.<\/p>\n – 83 ans et plus<\/strong>\u00a0: vieillissement avanc\u00e9, ralentissement de certaines fonctions et modifications structurelles accrues.<\/p>\n La p\u00e9riode de 9 \u00e0 32 ans correspond \u00e0 ce que l\u2019\u00e9tude qualifie d\u2019\u00ab\u00a0\u202fadolescence c\u00e9r\u00e9brale\u202f\u00a0\u00bb\u00a0: le cerveau continue de maturer, optimisant ses connexions neuronales et consolidant ses r\u00e9seaux avant de se stabiliser \u00e0 l\u2019\u00e2ge adulte. Ce basculement \u00e0 32 ans marque le pic d\u2019efficacit\u00e9 des connexions c\u00e9r\u00e9brales.<\/p>\n Cette d\u00e9couverte remet en question la d\u00e9finition classique de l\u2019adolescence, souvent limit\u00e9e \u00e0 la fin de l\u2019adolescence sociale ou l\u00e9gale autour de 18\u201320 ans.<\/p>\n","protected":false},"excerpt":{"rendered":"Une \u00e9tude r\u00e9cente de l\u2019Universit\u00e9 de Cambridge au Royaume-Uni bouleverse la perception traditionnelle de l\u2019adolescence. Selon les chercheurs,…\n","protected":false},"author":2,"featured_media":581131,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[47,1011,27,72,6335,1922,6336,7224,71,104],"class_list":{"0":"post-581130","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sante","8":"tag-actualite","9":"tag-fr","10":"tag-france","11":"tag-health","12":"tag-home-page","13":"tag-info","14":"tag-la-reunion","15":"tag-newsletter-soir","16":"tag-sante","17":"tag-societe"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@fr\/115670144945606182","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/581130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/comments?post=581130"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/581130\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media\/581131"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media?parent=581130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/categories?post=581130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/tags?post=581130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}