Predição de sintomas de TEPT a partir da ativação cerebral em pessoas expostas a imagens de mutilação
Abstract
The present study aimed to verify whether it is possible to predict PTSD symptoms (Posttraumatic stress disorder) from brain activation patterns. During an fMRI scan, participants exposed to trauma were presented with neutral and mutilation pictures. We created two image aversiveness contexts (real and safe). The machine learning model could predict PTSD symptoms from patterns of brain activity in response to mutilation images in a real context, but not in a safe context. The brain regions with the higher contribution to the model were the occipitoparietal regions, including the superior parietal gyrus, inferior parietal gyrus, and supramarginal gyrus.
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