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ERIC Number: EJ1014872
Record Type: Journal
Publication Date: 2013-Jul
Pages: 16
Abstractor: As Provided
ISSN: ISSN-1363-755X
Undifferentiated Facial Electromyography Responses to Dynamic, Audio-Visual Emotion Displays in Individuals with Autism Spectrum Disorders
Rozga, Agata; King, Tricia Z.; Vuduc, Richard W.; Robins, Diana L.
Developmental Science, v16 n4 p499-514 Jul 2013
We examined facial electromyography (fEMG) activity to dynamic, audio-visual emotional displays in individuals with autism spectrum disorders (ASD) and typically developing (TD) individuals. Participants viewed clips of happy, angry, and fearful displays that contained both facial expression and affective prosody while surface electrodes measured "corrugator supercilli" and zygomaticus major facial muscle activity. Across measures of average and peak activity, the TD group demonstrated emotion-selective fEMG responding, with greater relative activation of the zygomatic to happy stimuli and greater relative activation of the corrugator to fearful stimuli. In contrast, the ASD group largely showed no significant differences between zygomatic and corrugator activity across these emotions. There were no group differences in the magnitude and timing of fEMG response in the muscle congruent to the stimuli. This evidence that fEMG responses in ASD are undifferentiated with respect to the valence of the stimulus is discussed in light of potential underlying neurobiological mechanisms. (Contains 4 figures, 1 table, and 8 footnotes.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Autism Diagnostic Observation Schedule
Grant or Contract Numbers: N/A