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Typical integration of emotion cues from bodies and faces in Autism Spectrum Disorder

Research output: Contribution to journalArticle

Rebecca Brewer, Federica Biotti, Geoffrey Bird

Original languageEnglish
Pages (from-to)82-87
Number of pages6
JournalCognition
Volume165
Early online date16 May 2017
DOIs
Accepted/In press10 May 2017
E-pub ahead of print16 May 2017
PublishedAug 2017

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Abstract

Contextual cues derived from body postures bias how typical observers categorize facial emotion; the same facial expression may be perceived as anger or disgust when aligned with angry and disgusted body postures. Individuals with Autism Spectrum Disorder (ASD) are thought to have difficulties integrating information from disparate visual regions to form unitary percepts, and may be less susceptible to visual illusions induced by context. The current study investigated whether individuals with ASD exhibit diminished integration of emotion cues extracted from faces and bodies. Individuals with and without ASD completed a binary expression classification task, categorizing facial emotion as ‘Disgust’ or ‘Anger’. Facial stimuli were drawn from a morph continuum blending facial disgust and anger, and presented in isolation, or accompanied by an angry or disgusted body posture. Participants were explicitly instructed to disregard the body context. Contextual modulation was inferred from a shift in the resulting psychometric functions. Contrary to prediction, observers with ASD showed typical integration of emotion cues from the face and body. Correlation analyses suggested a relationship between the ability to categorize emotion from isolated faces, and susceptibility to contextual influence within the ASD sample; individuals with imprecise facial emotion classification were influenced more by body posture cues.

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