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Voluntary facial expression and hemispheric asymmetry over the frontal cortex
Author(s) -
Coan James A.,
Allen John J.B.,
HarmonJones Eddie
Publication year - 2001
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/1469-8986.3860912
Subject(s) - psychology , disgust , sadness , anger , facial expression , electroencephalography , context (archaeology) , brain activity and meditation , facial muscles , frontal cortex , audiology , neuroscience , developmental psychology , cognitive psychology , clinical psychology , communication , medicine , paleontology , biology
Brain activity was monitored while 36 participants produced facial configurations denoting anger, disgust, fear, joy, and sadness. EEG alpha power was analyzed during each facial pose, with facial conditions grouped according to the approach/withdrawal motivational model of emotion. This model suggests that “approach” emotions are associated with relatively greater left frontal brain activity whereas “withdrawal” emotions are associated with relatively greater right frontal brain activity. In the context of a bilateral decrease in activation, facial poses of emotions in the withdrawal condition resulted in relatively less left frontal activation in the lateral‐frontal, midfrontal and frontal‐temporal‐central region, but not in the parietal region, as predicted. Findings in the approach condition were less consistently supportive of predictions of the approach/withdrawal model. Implications for the approach/withdrawal model and for the emotion eliciting potential of voluntary facial movement are discussed.