{"id":18629,"date":"2024-07-29T05:33:17","date_gmt":"2024-07-29T03:33:17","guid":{"rendered":"https:\/\/thesmartcityjournal.cibeles.net\/sin-categoria\/new-study-shows-how-the-brain-reacts-emotionally-to-the-real-world\/"},"modified":"2024-07-28T21:03:16","modified_gmt":"2024-07-28T19:03:16","slug":"new-study-shows-how-the-brain-reacts-emotionally-to-the-real-world","status":"publish","type":"post","link":"https:\/\/www.thesmartcityjournal.com\/en\/articles\/new-study-shows-how-the-brain-reacts-emotionally-to-the-real-world","title":{"rendered":"New study shows how the brain reacts emotionally to the real world"},"content":{"rendered":"<p class=\"lead\">Scientists of Berkeley reveal how brain activity predicts a person&#8217;s response \u2014 normal or abnormal \u2014 to an emotionally charged image<\/p>\n<p>In a new study, researchers were able to predict a person\u2019s response to emotionally charged scenes using brain imaging and computer modeling alone \u2014 gauging not only whether the person\u2019s reaction was positive, negative or neutral, but also how strong the reaction was.<\/p>\n<p>The study helps neuroscientists understand how the brain represents complex emotional natural stimuli, according to senior author&nbsp;<a href=\"http:\/\/bishoplab.berkeley.edu\/Sonia.html\" target=\"_blank\" rel=\"noopener\">Sonia Bishop<\/a>, adjunct associate professor of neuroscience at the University of California, Berkeley, and the newly appointed chair of psychology at Trinity College Dublin.<\/p>\n<p>The simple tasks used in the research will also make it easier to study autism spectrum disorder, where researchers seek to understand how individuals differ in processing everyday emotional stimuli.<\/p>\n<p>The study by neuroscientists at UC Berkeley, Trinity College Dublin and Google was&nbsp;<a href=\"https:\/\/www.nature.com\/articles\/s41467-024-49073-8\" target=\"_blank\" rel=\"noopener\">published July 9<\/a>&nbsp;in the journal&nbsp;<em>Nature Communications<\/em>.<\/p>\n<p>\u201cIt is hugely important for all species to be able to recognize and respond appropriately to emotionally salient stimuli, whether that means not eating rotten food, running from a bear, approaching an attractive person in a bar or comforting a tearful child,\u201d said Bishop, who is also a member of UC Berkeley\u2019s Helen Wills Neuroscience Institute. \u201cHow the brain enables us to respond in a nuanced way to emotionally charged situations and stimuli has long been of interest, but little is known about how the brain stores schemas or neural representations to support the nuanced behavioral choices we make in response to emotional natural stimuli.\u201d<\/p>\n<p>In addition, few studies have looked beyond a simple binary reaction \u2014 approach or avoid, fight or flight \u2014 when humans clearly have a more nuanced response.<\/p>\n<p>\u201cNeuroscience studies of motivated behavior often focus on simple approach or avoidance behaviors, such as lever-pressing for food or changing locations to avoid a shock,\u201d she said. \u201cHowever, when faced with natural emotional stimuli, humans don\u2019t simply choose between \u2018approach\u2019 or \u2018avoid\u2019. Rather, they select from a complex range of suitable responses. So, for example, our avoid response to a large bear \u2014 leave the area ASAP \u2014 is different to our avoid response to a weak, diseased animal \u2014 don\u2019t get too close. Similarly, our approach response to the positive stimuli of a potential mate differs from our approach reaction to a cute baby.\u201d<\/p>\n<p>In the new study, led by former UC Berkeley doctoral student Samy Abdel-Ghaffar, who is now at Google, human volunteers were shown a variety of natural images \u2014 a baby\u2019s face, a snarling dog, a person vomiting \u2014 chosen to evoke an emotional response. The participants\u2019 3D brain activity was measured with a functional magnetic resonance imager (fMRI); they also were asked to rate the images as positive, negative or neutral and reported the degree of emotional arousal to each.<\/p>\n<p>Analysis of brain-wide activity showed that regions of the occipital temporal cortex, located in the back of the brain, are tuned to represent both the type of stimulus \u2014 single human, couple, crowd, reptile, mammal, food, object, building, landscape \u2014 and the emotional characteristics of the stimulus. For example, positive high-arousal faces were represented in slightly different regions than negative high-arousal faces or neutral low-arousal faces.<\/p>\n<p>\u201cOur research reveals that the occipital temporal cortex is tuned not only to different categories of stimuli; it also breaks down these categories based on their emotional characteristics in a way that is well suited to guide selection between alternate behaviors,\u201d Bishop said.<\/p>\n<p>Abdel-Ghaffar then used machine learning, a type of artificial intelligence, to predict the response of a second group of volunteers to the same images based solely on the stable tuning patterns in the occipital temporal cortex. He found that he could. In fact, analyzing brain activity was a better predictor of participants\u2019 reactions than a machine learning assessment of the emotional aspects of the actual images.<\/p>\n<p>\u201cThis suggests that the brain chooses which information is important or not important to represent and holds stable representations of sub-categories of animate and inanimate stimuli that integrate affective information and are optimally organized to support the selection of behaviors to different types of emotional natural stimuli,\u201d Bishop said.<\/p>\n<p>She noted also that \u201cthe paradigm used does not involve a complex task, making this approach suitable in the future, for example, to further understanding of how individuals with a range of neurological and psychiatric conditions differ in processing emotional natural stimuli.\u201d<\/p>\n<p>The research was funded by the National Institutes of Health. Other co-authors of the paper are UC Berkeley neuroscience professor&nbsp;<a href=\"https:\/\/gallantlab.org\/\" target=\"_blank\" rel=\"noopener\">Jack Gallant<\/a>&nbsp;and three former members of UC Berkeley\u2019s Helen Wills Neuroscience Institute: University of Texas Austin professor&nbsp;<a href=\"https:\/\/neuroscience.berkeley.edu\/news\/letting-data-speak-itself-phd-alum-alex-huth-models-language-representation-brain\" target=\"_blank\" rel=\"noopener\">Alexander Huth<\/a>, University of Nevada Reno professor&nbsp;<a href=\"https:\/\/www.unr.edu\/psychology\/people\/mark-lescroart\" target=\"_blank\" rel=\"noopener\">Mark Lescroart<\/a>&nbsp;and data scientist Dustin Stansbury.<\/p>\n<p>Text: <a href=\"https:\/\/news.berkeley.edu\/author\/rsanders\/\" target=\"_blank\" rel=\"noopener\">Robert Sanders<\/a> (<a href=\"https:\/\/news.berkeley.edu\" target=\"_blank\" rel=\"noopener\">https:\/\/news.berkeley.edu<\/a>)<\/p>\n<p><em>Image: <\/em><em>How and to what degree we respond emotionally to the real world is handled by a region at the back of the brain called the occipital temporal cortex. These images were among 1,620 shown to volunteers in a study of the electrical activity in this region in response to viewing emotionally charged images. The results were used to predict the emotional responses of other participants based on brain activity alone.<\/em> <em>Adobe stock image<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scientists of Berkeley reveal how brain activity predicts a person&#8217;s response \u2014 normal or abnormal \u2014 to an emotionally charged image In a new study, researchers were able to predict a person\u2019s response to emotionally charged scenes using brain imaging and computer modeling alone \u2014 gauging not only whether the person\u2019s reaction was positive, negative\u2026<\/p>\n","protected":false},"author":2,"featured_media":18628,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_scj_primary_category_id":130,"_scj_featured":true,"_scj_featured_from":"","_scj_featured_until":"","_scj_featured_order":262,"_scj_visibility_class":"current","_scj_layout_family":"standard","_scj_article_style":"","_scj_display_overrides":[],"_scj_intro_image_id":18628,"_scj_intro_alt":"New study shows how the brain reacts emotionally to the real world","_scj_intro_caption":"","_scj_intro_class":"","_scj_intro_float":"","_scj_full_image_id":18628,"_scj_full_alt":"New study shows how the brain reacts emotionally to the real 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