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Classification of Facial Expressions for Intended Display of Emotions Using Brain–Computer Interfaces
Author(s) -
Salari Efraïm,
Freudenburg Zachary V.,
Vansteensel Mariska J.,
Ramsey Nick F.
Publication year - 2020
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.25821
Subject(s) - facial expression , brain–computer interface , psychology , electroencephalography , epilepsy , computer science , brain activity and meditation , speech recognition , cognitive psychology , neuroscience , communication
Facial expressions are important for intentional display of emotions in social interaction. For people with severe paralysis, the ability to display emotions intentionally can be impaired. Current brain–computer interfaces (BCIs) allow for linguistic communication but are cumbersome for expressing emotions. Here, we investigated the feasibility of a BCI to display emotions by decoding facial expressions. We used electrocorticographic recordings from the sensorimotor cortex of people with refractory epilepsy and classified five facial expressions, based on neural activity. The mean classification accuracy was 72%. This approach could be a promising avenue for development of BCI‐based solutions for fast communication of emotions. ANN NEUROL 2020;88:631–636