title: What can asymmetry and laterality in EMG tell us about the face and brain?
abstract: This paper will review the use of the electromyographic (EMG) technique for studying asymmetry and laterality in facial behavior. My discussion will include several issues: (1) a review of the neurology of facial expression with respect to asymmetry/laterality; (2) a compendium of models of cerebral hemispheric participation in emotion and in facial motor control that imply asymmetry-laterality in facial behavior; (3) a summary of facial asymmetry-laterality findings to date; and (4) uses and abuses of EMG techniques in inferring asymmetry-laterality in facial behavior. I conclude with (5) recommendations for future facial asymmetry-laterality research in general.
authors.affiliation: University of Pennsylvania.
authors.forename: A J
authors.initials: AJ
authors.lastname: Fridlund
mesh_terms: D001519:Behavior; D001921:Brain / Q000502:physiology*; D004292:Dominance, Cerebral; D004576:Electromyography; D005149:Facial Expression; D005152:Facial Muscles / Q000294:innervation / Q000502:physiology*; D007839:Functional Laterality; D006801:Humans; D012107:Research Design