{"id":13530,"date":"2021-07-15T15:58:47","date_gmt":"2021-07-15T18:58:47","guid":{"rendered":"https:\/\/portaldasaudenews.com\/?p=13530"},"modified":"2021-07-15T15:58:47","modified_gmt":"2021-07-15T18:58:47","slug":"cientistas-criam-mecanismo-que-decodifica-pensamento-de-homem-com-paralisia-cerebral","status":"publish","type":"post","link":"https:\/\/portaldasaudenews.com\/?p=13530","title":{"rendered":"Cientistas criam mecanismo que decodifica pensamento de homem com paralisia cerebral"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>Pesquisadores da Universidade da\u00a0Calif\u00f3rnia, em S\u00e3o Francisco (UCSF) demonstraram que as atividades mentais de uma pessoa com paralisia cerebral, que ficou impossibilitada de dialogar, podem ser decodificadas por meio de\u00a0palavras\u00a0e senten\u00e7as.<\/p>\n<p>Eles usaram um implante cerebral em um homem de quase 30 anos, que sofreu um\u00a0acidente vascular cerebral\u00a0na adolesc\u00eancia, tirando sua capacidade de falar. Ele agora se comunica usando um ponteiro preso a um bon\u00e9 para inserir letras em uma tela.<\/p>\n<p>Nesse estudo, liderado pelo neurocirurgi\u00e3o Edward Chang, um dispositivo composto por eletrodos foi implantado na cabe\u00e7a do paciente, sobre uma \u00e1rea cerebral respons\u00e1vel pelos comandos do trato vocal. Com algumas quest\u00f5es mostradas em tela, o participante tinha suas atividades cerebrais gravadas pelo dispositivo enquanto respondia mentalmente.<\/p>\n<p>O homem, que pediu para ser chamado de BRAVO1, foi o primeiro a participar de um ensaio cl\u00ednico com a nova tecnologia. Ao longo de 22 horas espalhadas por v\u00e1rios meses, a equipe gravou a atividade cerebral de BRAVO1 enquanto ele tentava dizer uma lista de 50 palavras comuns, como \u201c\u00e1gua\u201d, \u201cfam\u00edlia\u201d e \u201cbom\u201d. Esse vocabul\u00e1rio pode gerar coletivamente mais de mil frases.<\/p>\n<p>Segundo o site The Next Web, as palavras foram decodificadas com uma precis\u00e3o mediana de 74%, com 15 palavras por minuto e alcan\u00e7aram um desempenho m\u00e1ximo de 93% de precis\u00e3o, com 18 palavras por minuto.<\/p>\n<p>Novas tecnologias podem melhorar a qualidade de vida de pessoas com paralisia cerebral<\/p>\n<p>De acordo com os pesquisadores, essa \u00e9 a primeira vez que a atividade cerebral e o c\u00f3rtex de fala de uma pessoa paralisada pode ser decodificada em palavras completas.<\/p>\n<p>\u201cEsse estudo mostra uma grande promessa de restaurar a comunica\u00e7\u00e3o por meio do uso da maquinaria natural da fala do\u00a0c\u00e9rebro\u201d, disse o neurocirurgi\u00e3o.<\/p>\n<p>Muitas pesquisas anteriores nesse campo usaram abordagens baseadas na ortografia para digitar as letras uma por uma. Segundo Chang, a abordagem de sua equipe explora um aspecto mais natural da fala.<\/p>\n<p>A equipe agora est\u00e1 tentando melhorar o vocabul\u00e1rio e a velocidade de fala de seu sistema.<\/p>\n<p>Com o tempo, novas tecnologias podem surgir para promover uma r\u00e1pida e natural comunica\u00e7\u00e3o entre pessoas que sofrem de paralisias severas.<\/p>\n<p>*Com informa\u00e7\u00f5es de Olhar Digital<\/p>\n<p>Foto: Reprodu\u00e7\u00e3o<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Pesquisadores da Universidade da\u00a0Calif\u00f3rnia, em S\u00e3o Francisco (UCSF) demonstraram que as atividades mentais de<\/p>\n","protected":false},"author":1,"featured_media":13531,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[94],"tags":[],"class_list":["post-13530","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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