{"id":12979,"date":"2024-06-20T16:15:39","date_gmt":"2024-06-20T16:15:39","guid":{"rendered":"https:\/\/dailyai.com\/?p=12979"},"modified":"2024-06-21T15:12:06","modified_gmt":"2024-06-21T15:12:06","slug":"ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2024\/06\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\/","title":{"rendered":"O sistema de IA consegue prever a sua ansiedade a partir de reac\u00e7\u00f5es a fotografias"},"content":{"rendered":"<p><strong>Imagine ser capaz de prever o n\u00edvel de ansiedade de algu\u00e9m apenas pedindo-lhe que classifique algumas imagens e responda a algumas perguntas simples. <\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Foi exatamente isso que os investigadores da Universidade de Cincinnati e da Universidade Northwestern conseguiram com o seu sistema \"Comp Cog AI\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Combinando a IA com a ci\u00eancia de como as nossas mentes processam a informa\u00e7\u00e3o, criaram uma ferramenta que pode identificar com precis\u00e3o as pessoas que podem estar a lutar contra a ansiedade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O <\/span><a href=\"https:\/\/www.nature.com\/articles\/s44184-024-00074-x\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">estudo<\/span><\/a><span style=\"font-weight: 400;\">O estudo, publicado na revista Mental Health Research, envolveu mais de 3000 participantes de todos os EUA. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cada pessoa classificou uma s\u00e9rie de imagens ligeiramente emocionais do International Affective Picture System (IAPS) e forneceu informa\u00e7\u00f5es b\u00e1sicas sobre si pr\u00f3pria, como a idade e a perce\u00e7\u00e3o de solid\u00e3o.\u00a0<\/span><\/p>\n<p>A IAPS foi desenvolvida pelo Centro para o Estudo da Emo\u00e7\u00e3o e da Aten\u00e7\u00e3o da Universidade da Florida. Fornece um conjunto padronizado de fotografias classificadas quanto ao seu conte\u00fado emocional em termos de val\u00eancia (agradabilidade), excita\u00e7\u00e3o (intensidade) e domin\u00e2ncia (controlo).<\/p>\n<figure id=\"attachment_12980\" aria-describedby=\"caption-attachment-12980\" style=\"width: 474px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12980\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/trees.png\" alt=\"Ai emo\u00e7\u00f5es\" width=\"474\" height=\"442\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/trees.png 561w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/trees-300x280.png 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/trees-13x12.png 13w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/trees-60x56.png 60w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><figcaption id=\"caption-attachment-12980\" class=\"wp-caption-text\">Um exemplo de uma imagem do International Affective Picture System (IAPS). Fonte: Investiga\u00e7\u00e3o em Sa\u00fade Mental.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">O sistema de IA analisou ent\u00e3o estes dados, procurando padr\u00f5es na forma como as pessoas respondiam \u00e0s imagens e como essas respostas se relacionavam com os seus n\u00edveis de ansiedade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ap\u00f3s o treino, o sistema de IA Comp Cog foi capaz de prever a ansiedade com uma precis\u00e3o de at\u00e9 81%, oferecendo esperan\u00e7a para um futuro em que os problemas de sa\u00fade mental possam ser identificados utilizando sistemas leves e de auto-atendimento.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A autora principal Sumra Bari <\/span><a href=\"https:\/\/www.uc.edu\/news\/articles\/2024\/06\/ai-predicts-anxiety.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">explica<\/span><\/a><span style=\"font-weight: 400;\">O estudo de caso \u00e9 um estudo de caso, \"Utiliz\u00e1mos recursos computacionais m\u00ednimos e um pequeno conjunto de vari\u00e1veis para prever os n\u00edveis de ansiedade. Um conjunto importante destas vari\u00e1veis quantifica processos importantes para o julgamento.\"<\/span><\/p>\n<h2>Mais informa\u00e7\u00f5es sobre o estudo<\/h2>\n<p>Eis mais informa\u00e7\u00f5es sobre o funcionamento do estudo:<\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Recolha de dados<\/b><span style=\"font-weight: 400;\">: Os participantes completaram uma tarefa de classifica\u00e7\u00e3o de imagens, atribuindo classifica\u00e7\u00f5es de -3 (n\u00e3o gosto muito) a +3 (gosto muito) a 48 imagens ligeiramente emocionais do IAPS. Tamb\u00e9m responderam a perguntas sobre a sua idade, a perce\u00e7\u00e3o da solid\u00e3o e informa\u00e7\u00f5es demogr\u00e1ficas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Extra\u00e7\u00e3o de caracter\u00edsticas<\/b><span style=\"font-weight: 400;\">: O sistema de IA extraiu 15 vari\u00e1veis-chave de julgamento dos dados de classifica\u00e7\u00e3o das imagens, como a avers\u00e3o \u00e0 perda, a avers\u00e3o ao risco e a consist\u00eancia da avers\u00e3o \u00e0 recompensa. Estas vari\u00e1veis quantificam os enviesamentos nos julgamentos de recompensa\/avers\u00e3o e t\u00eam sido associadas a sistemas cerebrais implicados tanto no julgamento como na ansiedade.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Forma\u00e7\u00e3o e previs\u00e3o de IA<\/b><span style=\"font-weight: 400;\">: Os investigadores utilizaram os algoritmos de aprendizagem autom\u00e1tica Random Forest e Random Forest equilibrado para treinar o sistema de IA num subconjunto dos dados. A IA utilizou as vari\u00e1veis de julgamento e os factores contextuais para prever o n\u00edvel de ansiedade de cada participante, medido pela parte de ansiedade de estado do Invent\u00e1rio de Ansiedade Estado-Tra\u00e7o (STAI).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Avalia\u00e7\u00e3o e interpreta\u00e7\u00e3o de modelos<\/b><span style=\"font-weight: 400;\">: O sistema de IA treinado foi testado nos restantes dados para avaliar a sua exatid\u00e3o, sensibilidade e especificidade na previs\u00e3o dos n\u00edveis de ansiedade. Os investigadores tamb\u00e9m realizaram an\u00e1lises de media\u00e7\u00e3o e modera\u00e7\u00e3o para compreender como as vari\u00e1veis de avalia\u00e7\u00e3o e os factores contextuais interagiam para modelar a ansiedade.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Os quatro preditores mais importantes - idade, solid\u00e3o, rendimento do agregado familiar e situa\u00e7\u00e3o profissional - contribu\u00edram com 29-31% do poder preditivo do modelo, enquanto as 15 vari\u00e1veis de avalia\u00e7\u00e3o contribu\u00edram coletivamente com 55-61%.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O coautor Aggelos Katsaggelos sublinhou a import\u00e2ncia da abordagem do estudo, afirmando: \"A utiliza\u00e7\u00e3o de uma tarefa de classifica\u00e7\u00e3o de imagens com vari\u00e1veis contextuais que afectam o julgamento pode parecer simples, mas a compreens\u00e3o dos padr\u00f5es de prefer\u00eancia permite-nos descobrir os componentes cr\u00edticos para um grande conjunto de comportamentos\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os investigadores pretendem desenvolver a tecnologia Comp Cog AI numa aplica\u00e7\u00e3o de f\u00e1cil utiliza\u00e7\u00e3o para os prestadores de cuidados de sa\u00fade, hospitais e at\u00e9 mesmo para as for\u00e7as armadas, a fim de identificar rapidamente indiv\u00edduos com elevado risco de ansiedade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Como refere Bari, \"a tarefa de classifica\u00e7\u00e3o de imagens pode ser utilizada para produzir instant\u00e2neos di\u00e1rios e imparciais do estado de sa\u00fade mental de uma pessoa sem fazer perguntas directas que possam desencadear sentimentos negativos ou perturbadores\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A investiga\u00e7\u00e3o anterior utilizou a IA para <a href=\"https:\/\/dailyai.com\/pt\/2023\/10\/ai-can-diagnose-schizophrenia-by-analyzing-speech-patterns\/\">ajudar a diagnosticar a esquizofrenia<\/a>Foram desenvolvidas ferramentas para proporcionar terapia com IA a pessoas com problemas de sa\u00fade mental <a href=\"https:\/\/dailyai.com\/pt\/2024\/02\/researchers-develop-an-immersive-ai-therapy-system-named-xaia\/\">atrav\u00e9s de avatares digitais<\/a>.\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Imagine ser capaz de prever o n\u00edvel de ansiedade de algu\u00e9m apenas pedindo-lhe que classifique algumas imagens e responda a algumas perguntas simples. Foi exatamente isso que os investigadores da Universidade de Cincinnati e da Universidade Northwestern conseguiram com o seu sistema \"Comp Cog AI\".  Combinando a IA com a ci\u00eancia da forma como as nossas mentes processam a informa\u00e7\u00e3o, criaram uma ferramenta capaz de identificar com precis\u00e3o as pessoas que podem estar a debater-se com a ansiedade.  O estudo, publicado na Mental Health Research, envolveu mais de 3000 participantes de todos os EUA. Cada pessoa classificou uma s\u00e9rie de imagens ligeiramente emocionais do International Affective Picture System (IAPS) e<\/p>","protected":false},"author":2,"featured_media":13004,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[178],"class_list":["post-12979","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-medicine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AI system can predict how anxious you are from reactions to photos | 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\/pt\/2024\/06\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AI system can predict how anxious you are from reactions to photos | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Imagine being able to predict someone&#8217;s anxiety level just by having them rate a few pictures and answer some simple questions. That&#8217;s exactly what researchers from the University of Cincinnati and Northwestern University have accomplished with their &#8220;Comp Cog AI&#8221; system.\u00a0 By combining AI with the science of how our minds process information, they&#8217;ve created a tool that can accurately identify people who might be struggling with anxiety.\u00a0 The study, published in Mental Health Research, involved over 3,000 participants from across the US. Each person rated a series of mildly emotional images from the International Affective Picture System (IAPS) and\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/pt\/2024\/06\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-20T16:15:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-21T15:12:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/DALL\u00b7E-2024-06-20-17.05.33-An-AI-system-analyzing-a-series-of-photos-to-predict-anxiety-levels.-The-scene-includes-a-computer-screen-displaying-multiple-facial-reactions-in-phot.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1792\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Sam Jeans\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:site\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Jeans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\\\/\"},\"author\":{\"name\":\"Sam Jeans\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/#\\\/schema\\\/person\\\/711e81f945549438e8bbc579efdeb3c9\"},\"headline\":\"AI system can predict how anxious you are from reactions to photos\",\"datePublished\":\"2024-06-20T16:15:39+00:00\",\"dateModified\":\"2024-06-21T15:12:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\\\/\"},\"wordCount\":636,\"publisher\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-system-can-predict-how-anxious-you-are-from-reactions-to-photos\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dailyai.com\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/DALL\u00b7E-2024-06-20-17.05.33-An-AI-system-analyzing-a-series-of-photos-to-predict-anxiety-levels.-The-scene-includes-a-computer-screen-displaying-multiple-facial-reactions-in-phot.webp\",\"keywords\":[\"Medicine\"],\"articleSection\":[\"Ethics &amp; 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