No proprioceptive deficits in autism despite movement-related sensory and execution impairments.
Proprioception is intact in autism—look upstream to motor planning or execution when clients look clumsy.
01Research in Context
What this study did
Teens with and without autism sat in a lab. They matched elbow angles while their arms were moved for them or while they moved themselves.
Sensors tracked arm position. The team asked: do autistic teens feel where their arm is any worse?
What they found
Both groups hit the same angles. No one was more wobbly.
Proprioception—the sense of limb position—was fine in autism.
How this fits with other research
Jones et al. (2010) pooled 51 studies and saw big motor clumsiness in autism. Lam et al. (2011) now show the clumsiness is not from poor body sensing.
Milgramm et al. (2021) watched six-year-olds fit pegs. Autistic kids planned slower and jerkier moves. Together the papers say: the body map is okay; the plan or the online fix is shaky.
Chen et al. (2018) asked teens to imagine turning their hand. Autistic teens could do it, just slower. Again, basic body signals work; higher-order imagery lags.
Why it matters
You can stop blaming “poor body awareness” when a client overshoots a reach. Keep teaching motor skills, but add planning cues, slow demo, and extra practice time. The body sense is there; the brain needs more reps to use it smoothly.
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02At a glance
03Original abstract
Autism spectrum disorder (ASD) often involves sensory and motor problems, yet the proprioceptive sense of limb position has not been directly assessed. We used three tasks to assess proprioception in adolescents with ASD who had motor and sensory perceptual abnormalities, and compared them to age- and IQ-matched controls. Results showed no group differences in proprioceptive accuracy or precision during active or passive tasks. Both groups showed (a) biases in elbow angle accuracy that varied with joint position, (b) improved elbow angle precision for active versus passive tasks, and (c) improved precision for a fingertip versus elbow angle estimation task. Thus, a primary proprioceptive deficit may not contribute to sensorimotor deficits in ASD. Abnormalities may arise at later sensory processing stages.
Journal of autism and developmental disorders, 2011 · doi:10.1007/s10803-010-1161-1