{"id":920,"date":"2023-05-25T20:56:38","date_gmt":"2023-05-25T20:56:38","guid":{"rendered":"https:\/\/dailyai.com\/?p=920"},"modified":"2023-06-01T09:26:56","modified_gmt":"2023-06-01T09:26:56","slug":"ai-supported-digital-bridge-enables-man-to-walk-naturally","status":"publish","type":"post","link":"https:\/\/dailyai.com\/fr\/2023\/05\/ai-supported-digital-bridge-enables-man-to-walk-naturally\/","title":{"rendered":"Un \"pont num\u00e9rique\" assist\u00e9 par l'IA permet \u00e0 l'homme de marcher naturellement"},"content":{"rendered":"<p><strong>Gert-Jan Oskam, \u00e2g\u00e9 de 40 ans, s'est bris\u00e9 le cou lors d'un accident de v\u00e9lo en 2011.<\/strong><\/p>\n<p><span style=\"font-weight: 400\">Les chercheurs ont utilis\u00e9 un \"pont num\u00e9rique\" pour r\u00e9tablir les connexions entre le cerveau et les jambes, ce qui a permis \u00e0 Oskam de se tenir debout et de marcher naturellement.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\"Il y a quelques mois, j'ai pu, pour la premi\u00e8re fois apr\u00e8s dix ans, me lever et boire une bi\u00e8re avec mes amis\", a d\u00e9clar\u00e9 Oskam.\u00a0<\/span><\/p>\n<figure id=\"attachment_922\" aria-describedby=\"caption-attachment-922\" style=\"width: 480px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-922\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface.png\" alt=\"Interface cerveau-\u00e9pine dorsale\" width=\"480\" height=\"469\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface.png 894w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-300x293.png 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-768x751.png 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-370x362.png 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-800x782.png 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-20x20.png 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-740x723.png 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/05\/brainspine-interface-49x48.png 49w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><figcaption id=\"caption-attachment-922\" class=\"wp-caption-text\">L'interface cerveau-\u00e9pine dorsale d'Oskam<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400\">L'\u00e9tude, <\/span><a href=\"https:\/\/www.nature.com\/articles\/s41586-023-06094-5\"><span style=\"font-weight: 400\">publi\u00e9 dans Nature<\/span><\/a><span style=\"font-weight: 400\">Nous avons r\u00e9tabli cette communication gr\u00e2ce \u00e0 un pont num\u00e9rique entre le cerveau et la moelle \u00e9pini\u00e8re, ce qui a permis \u00e0 une personne atteinte de t\u00e9trapl\u00e9gie chronique de se tenir debout et de marcher naturellement au sein de la communaut\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Les chercheurs travaillent depuis plusieurs ann\u00e9es sur les interfaces cerveau-\u00e9pine dorsale, y compris sur un syst\u00e8me d'interface entre le cerveau et l'\u00e9pine dorsale. <a href=\"https:\/\/www.theguardian.com\/science\/2016\/nov\/09\/brain-implant-allows-partially-paralysed-monkeys-to-walk-again\">Projet 2016<\/a> qui a permis \u00e0 un singe paralys\u00e9 de bouger ses jambes et une autre qui a permis \u00e0 un singe paralys\u00e9 de bouger ses jambes. <a href=\"https:\/\/www.unite.ai\/brain-computer-interface-technology-restores-sensation-to-hand-of-individual-with-spinal-cord-injury\/\">r\u00e9tablissement de la sensibilit\u00e9 de la main<\/a> d'un homme atteint d'une l\u00e9sion de la moelle \u00e9pini\u00e8re.\u00a0<\/span><\/p>\n<p>Il s'agit du projet le plus complet \u00e0 ce jour, qui met en \u00e9vidence le r\u00f4le croissant de l'IA dans les nouvelles applications m\u00e9dicales.<\/p>\n<h2><span style=\"font-weight: 400\">D\u00e9veloppement de l'interface cerveau-\u00e9pine dorsale<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Le \"pont num\u00e9rique\" est une interface cerveau-\u00e9pine dorsale qui lit l'activit\u00e9 neuronale du cerveau, la convertit en signaux \u00e9lectriques et les transmet aux neurones sains de l'autre c\u00f4t\u00e9 de la l\u00e9sion vert\u00e9brale.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">La plupart des l\u00e9sions de la moelle \u00e9pini\u00e8re n'endommagent pas directement les neurones - elles perturbent les voies descendantes qui relient le cerveau \u00e0 la colonne vert\u00e9brale et au syst\u00e8me nerveux p\u00e9riph\u00e9rique.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Le r\u00f4le de l'IA<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Afin de reconnecter le cerveau aux jambes, des \u00e9lectrodes ont \u00e9t\u00e9 connect\u00e9es au cerveau d'Oskam pour lire les informations suivantes <\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Electrocorticography\"><span style=\"font-weight: 400\">\u00e9lectrocorticographie (ECoG)<\/span><\/a><span style=\"font-weight: 400\"> l'activit\u00e9 c\u00e9r\u00e9brale.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Pour marcher, nous utilisons les muscles de la hanche, du genou et de la cheville. L'interface doit attribuer l'activit\u00e9 c\u00e9r\u00e9brale aux diff\u00e9rents groupes musculaires des jambes droite et gauche. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Les projets pr\u00e9c\u00e9dents ont constat\u00e9 que l'activit\u00e9 c\u00e9r\u00e9brale \u00e9tait difficile \u00e0 analyser, ce qui rendait difficile la pr\u00e9diction de l'intention de chaque pens\u00e9e.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">C'est l\u00e0 que l'IA intervient : les chercheurs ont mis au point une m\u00e9thode de filtrage et de d\u00e9codage de l'activit\u00e9 c\u00e9r\u00e9brale \u00e0 l'aide de l'apprentissage automatique.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Les chercheurs ont utilis\u00e9 des algorithmes pour remplir deux fonctions :<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Un premier mod\u00e8le pr\u00e9dit la probabilit\u00e9 de l'intention de bouger une articulation sp\u00e9cifique.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">L'autre mod\u00e8le pr\u00e9dit l'amplitude et la direction du mouvement.\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Une fois l'interface install\u00e9e, Oskam a particip\u00e9 \u00e0 un programme de formation qui lui a demand\u00e9 de lire des indices visuels \u00e0 travers une interface.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le programme lui a indiqu\u00e9 les mouvements sur lesquels il devait se concentrer, en aidant \u00e0 calibrer le mod\u00e8le d'IA pour qu'il \"d\u00e9code\" ses pens\u00e9es et stimule les bons muscles.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Les r\u00e9sultats<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Les chercheurs ont effectu\u00e9 une s\u00e9rie de tests, notamment des marches d'essai de 6 et 10 minutes, au cours desquelles Oskam a r\u00e9ussi \u00e0 parcourir 100 m\u00e8tres, des tests en position debout, la mont\u00e9e d'escaliers et la marche sur un terrain accident\u00e9 et irr\u00e9gulier. Ses capacit\u00e9s de marche se sont nettement am\u00e9lior\u00e9es et s'am\u00e9liorent \u00e0 chaque s\u00e9ance d'entra\u00eenement.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">En outre, l'interface a eu un effet \u00e0 long terme sur la capacit\u00e9 de marche d'Oskam, m\u00eame lorsqu'elle est \u00e9teinte. Apr\u00e8s 40 s\u00e9ances d'entra\u00eenement, Oskam pouvait marcher avec plus d'assurance avec ses aides \u00e0 la marche, ce qui souligne le potentiel de ces dispositifs pour la r\u00e9\u00e9ducation \u00e0 long terme.<\/span><\/p>\n<p><span style=\"font-weight: 400\">L'IA a soutenu des applications similaires dans le domaine des technologies m\u00e9dicales, telles que les interfaces cerveau-ordinateur qui permettent d'am\u00e9liorer la qualit\u00e9 de vie des patients. <\/span><a href=\"https:\/\/www.independent.co.uk\/tech\/brain-computer-interface-b2269196.html\"><span style=\"font-weight: 400\">transformer les pens\u00e9es en discours<\/span><\/a><span style=\"font-weight: 400\">. Ces appareils pourraient redonner la parole aux personnes ayant subi une l\u00e9sion c\u00e9r\u00e9brale ou atteintes d'une maladie neurod\u00e9g\u00e9n\u00e9rative telle que la scl\u00e9rose lat\u00e9rale amyotrophique (SLA).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Avec le temps, ces dispositifs deviendront plus faciles \u00e0 d\u00e9velopper et \u00e0 installer et pourraient m\u00eame fonctionner sans chirurgie invasive.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Gert-Jan Oskam, \u00e2g\u00e9 de 40 ans, s'est bris\u00e9 la nuque lors d'un accident de v\u00e9lo en 2011. Les chercheurs ont utilis\u00e9 un \"pont num\u00e9rique\" pour r\u00e9tablir les connexions entre le cerveau et les jambes, ce qui a permis \u00e0 Gert-Jan Oskam de se lever et de marcher naturellement. \"Il y a quelques mois, j'ai pu, pour la premi\u00e8re fois apr\u00e8s 10 ans, me lever et boire une bi\u00e8re avec mes amis\", a d\u00e9clar\u00e9 Oskam.  L'\u00e9tude, publi\u00e9e dans Nature, indique que \"nous avons r\u00e9tabli cette communication gr\u00e2ce \u00e0 un pont num\u00e9rique entre le cerveau et la moelle \u00e9pini\u00e8re qui a permis \u00e0 une personne atteinte de t\u00e9trapl\u00e9gie chronique de se tenir debout et de marcher naturellement dans un environnement communautaire\". Les chercheurs ont travaill\u00e9 sur les syst\u00e8mes cerveau-moelle \u00e9pini\u00e8re<\/p>","protected":false},"author":2,"featured_media":932,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[101],"class_list":["post-920","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-medtech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AI-supported \u201cdigital bridge\u201d enables man to walk naturally | DailyAI<\/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:\/\/dailyai.com\/fr\/2023\/05\/ai-supported-digital-bridge-enables-man-to-walk-naturally\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AI-supported \u201cdigital bridge\u201d enables man to walk naturally | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Gert-Jan Oskam, aged 40, broke his neck in a biking accident in 2011. Researchers used a \u201cdigital bridge\u201d to reestablish connections between the brain and legs, enabling Oskam to stand and walk naturally. \u201cA few months ago, I was able, for the first time after 10 years, to stand up and have a beer with my friends,\u201d said Oskam.\u00a0 The study, published in Nature, says, \u201cWe restored this communication with a digital bridge between the brain and spinal cord that enabled an individual with chronic tetraplegia to stand and walk naturally in community settings.\u201d Researchers have been working on brain-spine\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/fr\/2023\/05\/ai-supported-digital-bridge-enables-man-to-walk-naturally\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-25T20:56:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-06-01T09:26:56+00:00\" \/>\n<meta property=\"og:image\" 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