Sensorimotor learning and associated visual perception are intact but unrelated in autism spectrum disorder.
Motor timing practice works for autistic adults, yet it does not spill over into visual timing skills.
01Research in Context
What this study did
Researchers asked autistic adults to tap along with a flashing light.
The light blinked at different speeds.
Each person practiced for one session.
The team also tested how well the adults could spot tiny time gaps between two pictures.
They wanted to see if better tapping linked to better visual timing.
What they found
The adults tapped more in time after practice.
Their visual timing scores stayed the same and did not link to tapping gains.
Non-autistic adults usually show a link; these participants did not.
How this fits with other research
De Meo-Monteil et al. (2019) saw the same group keep steady or even sharper visual-motor timing, backing up the intact visual scores.
Capio et al. (2013) already found autistic people catch 17 ms visual gaps better than peers, so fine visual timing is not new.
Wachob et al. (2015) looks like a clash—they saw no boost when pictures were added to lessons.
The gap is age and task: David studied kids doing picture learning, while J et al. tested adults on millisecond flashes.
Both agree that vision is not automatically a super-power; it is simply on par or slightly better in specific contexts.
Why it matters
You can keep using motor practice to build timing skills, but do not expect it to improve visual discrimination.
Check visual supports with the same care you check auditory ones.
If you need precise visual timing, autistic adults likely already have it; spend session time on other goals.
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02At a glance
03Original abstract
UNLABELLED: Humans show an astonishing capability to learn sensorimotor behaviours. However, data from sensorimotor learning experiments suggest the integration of efferent sensorimotor commands, afferent sensorimotor information, and visual consequences of a performed action during learning is different in autism, leading to atypical representation of internal action models. Here, we investigated the generalization of a sensorimotor internal action model formed during sensorimotor learning to a different, but associated, visual perception task. Although motor timing was generally less accurate in adults with autism, following practice with feedback both autistic adults, and controls, significantly improved performance of the movement sequence timing task by reducing timing error. In a subsequent perception task, both groups demonstrated similar temporal-discrimination accuracy (autism = 75%; control = 76%). Significant correlations between motor timing error, and temporal-discrimination during a perception task, was found for controls. No significant correlations were found for autistic adults. Our findings indicate that autistic adults demonstrated adaptation by reducing motor timing error through sensorimotor learning. However, the finding of significant correlations between motor timing error and temporal-discrimination accuracy in the control group only suggests sensorimotor processes underpinning internal action model formation operate differently in autism. Autism Res 2018, 11: 296-304. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: We showed autistic adults learned a new motor skill, and visually judged moving objects, to a similar level of accuracy as a control group. Unlike the control group, there was no relationship between how well autistic adults learned the motor skill, and how well they judged objects. The lack of a relationship might be one of the reasons autistic adults interact differently in the social world.
Autism research : official journal of the International Society for Autism Research, 2018 · doi:10.1002/aur.1882