BBC<\/a>, arat\u0103 c\u0103 creierul trece prin cinci faze majore. Prima este copil\u0103ria, care acoper\u0103 intervalul dintre zero \u0219i 9 ani. Urmeaz\u0103 adolescen\u021ba, \u00eentre 9 \u0219i 32 de ani. A treia etap\u0103 este v\u00e2rsta adult\u0103, ce cuprinde perioada dintre 32 \u0219i 66 de ani. \u00cemb\u0103tr\u00e2nirea timpurie apare \u00eentre 66 \u0219i 83 de ani, iar \u00eemb\u0103tr\u00e2nirea t\u00e2rzie \u00eencepe dup\u0103 v\u00e2rsta de 83 de ani.<\/p>\nFiecare dintre aceste etape este \u00eenso\u021bit\u0103 de transform\u0103ri majore \u00een modul \u00een care neuronii comunic\u0103 \u00eentre ei.<\/p>\n
Cea mai mare surpriz\u0103: adolescen\u021ba p\u00e2n\u0103 la 32 de ani<\/p>\n
Potrivit cercet\u0103torilor, la v\u00e2rsta de 9 ani creierul intr\u0103 \u00eentr-o perioad\u0103 de \u201eeficien\u021b\u0103 nemiloas\u0103\u201d, \u00een care re\u021belele neuronale se optimizeaz\u0103 \u00eentr-un ritm accelerat. \u201eEste o schimbare uria\u0219\u0103\u201d, a explicat Dr. Alexa Mousley, autoarea studiului. Ea a subliniat c\u0103 aceasta este \u201ecea mai profund\u0103 tranzi\u021bie \u00eentre fazele creierului\u201d.<\/p>\n
Aceast\u0103 perioad\u0103 prelungit\u0103 explic\u0103 \u0219i vulnerabilitatea crescut\u0103 la tulbur\u0103ri mintale. \u201eEste momentul \u00een care exist\u0103 cel mai mare risc de apari\u021bie a problemelor de s\u0103n\u0103tate mintal\u0103\u201d, a explicat specialista.<\/p>\n
Dr. Mousley este cercet\u0103toare \u00een neuro\u0219tiin\u021be la Universitatea Cambridge, specializat\u0103 \u00een analiza dezvolt\u0103rii \u0219i reorganiz\u0103rii re\u021belelor neuronale.<\/p>\n
Creierul atinge apogeul \u00een jurul v\u00e2rstei de 30 de ani <\/p>\n
Adolescen\u021ba este singura etap\u0103 \u00een care eficien\u021ba re\u021belelor cerebrale cre\u0219te constant, sus\u021bin\u00e2nd ideea c\u0103 func\u021biile cognitive ating un v\u00e2rf \u00een jurul v\u00e2rstei de 30 de ani. \u201eEste foarte interesant c\u0103 creierul r\u0103m\u00e2ne \u00een aceea\u0219i faz\u0103 \u00eentre 9 \u0219i 32 de ani\u201d, a precizat cercet\u0103toarea.<\/p>\n
Dup\u0103 32 de ani, creierul intr\u0103 \u00eentr-o perioad\u0103 lung\u0103 de stabilitate, \u00een care schimb\u0103rile sunt mult mai lente. Dr. Mousley spune c\u0103 aceast\u0103 etap\u0103 \u201ese aliniaz\u0103 cu un platou al inteligen\u021bei \u0219i personalit\u0103\u021bii\u201d. Nivelurile cognitive \u0219i tr\u0103s\u0103turile individuale r\u0103m\u00e2n relativ constante, \u00eens\u0103 f\u0103r\u0103 transform\u0103ri accelerate ca \u00een anii anteriori.<\/p>\n
Cum \u00eemb\u0103tr\u00e2ne\u0219te, de fapt, creierul <\/p>\n
\u00cencep\u00e2nd cu 66 de ani, creierul nu mai func\u021bioneaz\u0103 ca un \u00eentreg perfect sincronizat, ci ca un ansamblu de \u201esubgrupuri\u201d neuronale, asemenea \u201emembrilor unei trupe care \u00eencep proiecte solo\u201d. Aceast\u0103 fragmentare a re\u021belelor nu \u00eenseamn\u0103 un declin brusc, ci o reorganizare treptat\u0103 a modului \u00een care diferitele regiuni coopereaz\u0103 \u00eentre ele.<\/p>\n
Este etapa \u00een care apar primele schimb\u0103ri asociate \u00eemb\u0103tr\u00e2nirii. \u00cen acela\u0219i timp, \u00eencep s\u0103 se manifeste \u0219i probleme precum demen\u021ba sau hipertensiunea, care pot afecta s\u0103n\u0103tatea creierului. Dup\u0103 83 de ani, aceast\u0103 separare devine \u0219i mai pronun\u021bat\u0103, marc\u00e2nd intrarea \u00een ultima faz\u0103 a vie\u021bii cerebrale, unde modific\u0103rile sunt similare, dar accentuate.<\/p>\n
De ce conteaz\u0103 aceste descoperiri<\/p>\n
Speciali\u0219tii spun c\u0103 aceste rezultate pot explica de ce riscurile de tulbur\u0103ri mintale, demen\u021b\u0103 sau probleme cognitive apar la anumite v\u00e2rste.<\/p>\n
\u201eDiferen\u021bele \u00een structura conexiunilor cerebrale pot prezice dificult\u0103\u021bi de aten\u021bie, limbaj sau memorie\u201d, consider\u0103 prof. Duncan Astle, co-autor al cercet\u0103rii realizate la Universitatea Cambridge.<\/p>\n
Prof. Tara Spires-Jones, de la Universitatea din Edinburgh, specialist\u0103 \u00een neurodegenerare, a rezumat impactul descoperirii: \u201eEste un studiu foarte interesant, care eviden\u021biaz\u0103 c\u00e2t de mult se schimb\u0103 creierul nostru de-a lungul vie\u021bii\u201d.<\/p>\n
Rezultatele lui \u201ese potrivesc bine\u201d cu \u00een\u021belegerea noastr\u0103 despre \u00eemb\u0103tr\u00e2nirea creierului<\/a>, spune prof. Spires-Jones, dar a aten\u021bionat c\u0103 \u201enu toat\u0103 lumea va experimenta aceste schimb\u0103ri ale re\u021belelor cerebrale exact la acelea\u0219i v\u00e2rste\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"Adolescen\u021ba nu se \u00eencheie \u00een jurul a 20 de ani, a\u0219a cum \u0219tiam, ci abia la \u00eenceputul v\u00e2rstei…\n","protected":false},"author":2,"featured_media":51500,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[10884,32,33,31,3018,36,37,27,20135,74,34,35,25,41,40,38,39,26,28,29,30,20136,20137,71,72,73],"class_list":{"0":"post-51499","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-international","8":"tag-adolescenta","9":"tag-breaking-news","10":"tag-breakingnews","11":"tag-cele-mai-populare-subiecte","12":"tag-creier","13":"tag-featured-news","14":"tag-featurednews","15":"tag-headlines","16":"tag-imbatranirea-creierului","17":"tag-international","18":"tag-latest-news","19":"tag-latestnews","20":"tag-news","21":"tag-ro","22":"tag-romana","23":"tag-romania","24":"tag-romanian","25":"tag-stiri","26":"tag-titluri","27":"tag-top-stories","28":"tag-topstories","29":"tag-universitatea-cambridge","30":"tag-universitatea-din-edinburgh","31":"tag-world","32":"tag-world-news","33":"tag-worldnews"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ro\/115614921848894124","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts\/51499","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/comments?post=51499"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts\/51499\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/media\/51500"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/media?parent=51499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/categories?post=51499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/tags?post=51499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}