Investigating the perception of face identity in adults on the autism spectrum using behavioural and electrophysiological measures

Vision Research
Patrick DwyerJames Tanaka

Abstract

In the present study, we investigated face processing in individuals with self-reported Autism Spectrum Disorder (ASD, n = 16) and typically developing control participants (n = 16) using behavioural and electrophysiological measures. As a measure of their face memory, we administered the Cambridge Face Memory Test to participants in the ASD group. The results showed that the scores of the ASD participants were reliably below the age- and gender-matched norms of neurotypical individuals. To measure brain responses to faces, we used the fast periodic visual stimulation method, presenting photographs of a same-identity face (i.e., base face) at a constant frequency of 6 Hz (F) interleaved with different-identity faces (i.e., the oddball faces) presented at 1.2 Hz. The 6 Hz presentation of the base face and 1.2 Hz presentation of the oddball face elicited periodic brain responses corresponding to face detection and face individuation processes, respectively. Participants viewed four blocks of upright faces and four blocks of inverted faces. The results showed an enhanced EEG response to upright base faces at 6 Hz frequency and its harmonics compared to inverted faces, and the response was most focal over medial occipital channels....Continue Reading

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Citations

Apr 19, 2019·Applied Neuropsychology. Child·Sara SeminoMaria Carmen Usai
Oct 22, 2020·Molecular Autism·Ilaria Minio-PaluelloSimon Baron-Cohen
Sep 11, 2020·Neuroscience and Biobehavioral Reviews·Eduardo MercadoChristopher Lopata

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