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- W2753288516 abstract "The processing of emotional facial expressions (EFE) elicits specific evoked brain responses reflecting different stages of the EFEprocessing. Here, we focus on the Late Positive Potential (LPP; around 500ms) as a marker of an elaborative processing andconscious recognition of EFE involving the working memory. But at this latency, during visual exploration, the Event-RelatedPotential (ERP) at the stimuli onset and the Eye Fixation-Related Potential (EFRP) at the first fixation onset overlap. Using aGeneral Linear Model, these potentials can be identified separately. Methods. Twenty-four participants were asked to freelyempathize with the presented EFE (70 natural but standardized EFE -Neutral, Disgust, Surprise, Happiness- before categorizingthem. Results. Around 200ms, early posterior neural activities of the first EFRP were modulated by EFE (Happiness vs Disgust).During the LPP latency, this modulation provided by cognitive processing from this fixation onset (mean 275ms), strengthened anactivities pattern at left frontal sites -more involved for positive EFE- becoming significant across EFE. In contrast, at right frontalsites -more involved for negative EFE, another activities pattern, only elicited by the stimuli presentation, was significant acrossEFE. Moreover, taken together, these findings are in line with faster and facilitated perceptual processing for negative EFE." @default.
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- W2753288516 date "2017-08-20" @default.
- W2753288516 modified "2023-09-26" @default.
- W2753288516 title "Analyzing Emotional Facial Expressions’ Neural Correlates Using Event-Related Potentials and Eye Fixation-Related Potentials" @default.
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