Temporal synchrony and audiovisual integration of speech and object stimuli in autism

Research in Autism Spectrum Disorders
Elizabeth G SmithLoisa Bennetto

Abstract

Individuals with Autism Spectrum Disorders (ASD) have been shown to have multisensory integration deficits, which may lead to problems perceiving complex, multisensory environments. For example, understanding audiovisual speech requires integration of visual information from the lips and face with auditory information from the voice, and audiovisual speech integration deficits can lead to impaired understanding and comprehension. While there is strong evidence for an audiovisual speech integration impairment in ASD, it is unclear whether this impairment is due to low level perceptual processes that affect all types of audiovisual integration or if it is specific to speech processing. Here, we measure audiovisual integration of basic speech (i.e., consonant-vowel utterances) and object stimuli (i.e., a bouncing ball) in adolescents with ASD and well-matched controls. We calculate a temporal window of integration (TWI) using each individual's ability to identify which of two videos (one temporally aligned and one misaligned) matches auditory stimuli. The TWI measures tolerance for temporal asynchrony between the auditory and visual streams, and is an important feature of audiovisual perception. While controls showed similar toler...Continue Reading

Citations

Jul 2, 2020·American Journal on Intellectual and Developmental Disabilities·Kacie DunhamTiffany G Woynaroski
Mar 27, 2020·Journal of Autism and Developmental Disorders·Sayaka KawakamiMotomi Toichi
Jul 11, 2020·The Behavioral and Brain Sciences·Matthew K Belmonte
Nov 19, 2020·Autism Research : Official Journal of the International Society for Autism Research·Aija KotilaVille Raatikainen
Feb 26, 2021·Journal of Autism and Developmental Disorders·Julia IrwinNicole Landi
Oct 6, 2018·Neuroscience and Biobehavioral Reviews·Jacob I FeldmanTiffany G Woynaroski
Nov 23, 2017·Neuroscience and Biobehavioral Reviews·Shlomit BekerSophie Molholm
Aug 4, 2019·Behavioural Brain Research·Lucie JurekMarie-Maude Geoffray
Jun 9, 2021·Journal of Autism and Developmental Disorders·Jacob I FeldmanTiffany G Woynaroski

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Autism spectrum disorder is associated with challenges with social skills, repetitive behaviors, and often accompanied by sensory sensitivities and medical issues. Here is the latest research on autism.