Tiffany Woynaroski
Last active: 3/18/2020

Brief report: Arrested development of audiovisual speech perception in autism spectrum disorders.

Stevenson RA, Siemann JK, Woynaroski TG, Schneider BC, Eberly HE, Camarata SM, Wallace MT
J Autism Dev Disord. 2014 44 (6): 1470-7

PMID: 24218241 · PMCID: PMC4018423 · DOI:10.1007/s10803-013-1992-7

Atypical communicative abilities are a core marker of Autism Spectrum Disorders (ASD). A number of studies have shown that, in addition to auditory comprehension differences, individuals with autism frequently show atypical responses to audiovisual speech, suggesting a multisensory contribution to these communicative differences from their typically developing peers. To shed light on possible differences in the maturation of audiovisual speech integration, we tested younger (ages 6-12) and older (ages 13-18) children with and without ASD on a task indexing such multisensory integration. To do this, we used the McGurk effect, in which the pairing of incongruent auditory and visual speech tokens typically results in the perception of a fused percept distinct from the auditory and visual signals, indicative of active integration of the two channels conveying speech information. Whereas little difference was seen in audiovisual speech processing (i.e., reports of McGurk fusion) between the younger ASD and TD groups, there was a significant difference at the older ages. While TD controls exhibited an increased rate of fusion (i.e., integration) with age, children with ASD failed to show this increase. These data suggest arrested development of audiovisual speech integration in ASD. The results are discussed in light of the extant literature and necessary next steps in research.

MeSH Terms (12)

Acoustic Stimulation Adolescent Case-Control Studies Child Child Development Disorders, Pervasive Comprehension Female Humans Male Photic Stimulation Speech Perception Visual Perception

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