Keeping time in the brain: Autism spectrum disorder and audiovisual temporal processing.
Autistic brains often mistime sound-and-sight pairs, so keep classroom media in tight sync.
01Research in Context
What this study did
van Timmeren et al. (2016) wrote a narrative review. They pulled together studies on how people with autism handle sound and sight timing.
The authors looked at brain and behavior data. They asked if off-beat audiovisual timing could feed into social and sensory problems.
What they found
The review says autistic people often show atypical audiovisual timing. Lip-sync windows, flash-beep matches, and rapid re-calibration can all drift off standard settings.
These timing slips may ripple out to language, social cues, and sensory overload.
How this fits with other research
Johnston et al. (2017) tighten the picture: teens with autism need tighter lip-sync than peers. Mis-alignment above ~100 ms hurts their speech understanding more.
Jean-Wehman et al. (2017) add a twist. Kids with autism can quickly re-calibrate timing for speech but not for simple flashes and beeps. Pick speech-based tools if you want self-repair.
Two studies seem to clash yet don’t. Capio et al. (2013) and De Meo-Monteil et al. (2019) show adults with autism outperform others on pure visual timing tasks. The review’s broad "atypical" claim mostly targets audiovisual integration, not solo visual clocks.
Why it matters
Check your teaching videos. If lips lead or lag sound by more than a blink, swap the clip or add captions. Use speech apps that auto-align, and lean on strong visual timers for schedules—those still work fine.
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02At a glance
03Original abstract
A growing area of interest and relevance in the study of autism spectrum disorder (ASD) focuses on the relationship between multisensory temporal function and the behavioral, perceptual, and cognitive impairments observed in ASD. Atypical sensory processing is becoming increasingly recognized as a core component of autism, with evidence of atypical processing across a number of sensory modalities. These deviations from typical processing underscore the value of interpreting ASD within a multisensory framework. Furthermore, converging evidence illustrates that these differences in audiovisual processing may be specifically related to temporal processing. This review seeks to bridge the connection between temporal processing and audiovisual perception, and to elaborate on emerging data showing differences in audiovisual temporal function in autism. We also discuss the consequence of such changes, the specific impact on the processing of different classes of audiovisual stimuli (e.g. speech vs. nonspeech, etc.), and the presumptive brain processes and networks underlying audiovisual temporal integration. Finally, possible downstream behavioral implications, and possible remediation strategies are outlined. Autism Res 2016, 9: 720-738. © 2015 International Society for Autism Research, Wiley Periodicals, Inc.
Autism research : official journal of the International Society for Autism Research, 2016 · doi:10.1002/aur.1566