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Electrophysiological Responses to Emotional Facial Expressions Following a Mild Traumatic Brain Injury

1
Centre for Interdisciplinary Research in Rehabilitation (CRIR), IURDPM, CIUSSS du Centre-Sud-de-l’Île-de-Montréal, Montreal, QC H3S 2J4, Canada
2
Departement of Psychology, Université de Montréal, Montreal, QC H3C 3J7, Canada
3
International Laboratory for Brain, Music and Sound Research (BRAMS), Montreal, QC H3C 3J7, Canada
*
Author to whom correspondence should be addressed.
Brain Sci. 2019, 9(6), 142; https://doi.org/10.3390/brainsci9060142
Received: 3 June 2019 / Revised: 11 June 2019 / Accepted: 17 June 2019 / Published: 18 June 2019
(This article belongs to the Special Issue Perceptual and Affective Mechanisms in Facial Expression Recognition)
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Abstract

The present study aimed to measure neural information processing underlying emotional recognition from facial expressions in adults having sustained a mild traumatic brain injury (mTBI) as compared to healthy individuals. We thus measured early (N1, N170) and later (N2) event-related potential (ERP) components during presentation of fearful, neutral, and happy facial expressions in 10 adults with mTBI and 11 control participants. Findings indicated significant differences between groups, irrespective of emotional expression, in the early attentional stage (N1), which was altered in mTBI. The two groups showed similar perceptual integration of facial features (N170), with greater amplitude for fearful facial expressions in the right hemisphere. At a higher-level emotional discrimination stage (N2), both groups demonstrated preferential processing for fear as compared to happiness and neutrality. These findings suggest a reduced early selective attentional processing following mTBI, but no impact on the perceptual and higher-level cognitive processes stages. This study contributes to further improving our comprehension of attentional versus emotional recognition following a mild TBI. View Full-Text
Keywords: mild traumatic brain injury; event related potentials; emotions; facial expressions mild traumatic brain injury; event related potentials; emotions; facial expressions
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Drapeau, J.; Gosselin, N.; Peretz, I.; McKerral, M. Electrophysiological Responses to Emotional Facial Expressions Following a Mild Traumatic Brain Injury. Brain Sci. 2019, 9, 142.

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