(in progress)
References to drive atypical features are description of autism in the article by Leo Kanner princeps. Damasio and Maurer
(1978) believe that disturbances of motility (movement) may be indicative of an underlying neurological dysfunction.
motor abnormalities:
Dystonia, bradykinesia (slow movements), restlessness, involuntary movements, muscle tone, gait, abnormal posture, facial symmetry resembling paralysis facial emotional expressions.
abnormalities in motor development
Between 9 and 12 months, with no difference between children with ASD and children with ASD:
- poor visual attention
- mouthing objects
- aversion physical contact
Adrian (1993) shows from home videos taken before 1 st anniversary of children who are diagnosed with autism hypotonia and lack of facial expression
Between 12 and 24 months, videos highlight differences in the postures.
choreic movements
Difficulties balance (70% of children)
gross motor performance: delay of 5 months
No manual dominance
Deficit motor imitation: Imitation
on objects deficit is less than the imitation of hand gestures.
Imitation is most affected in people with autism than for other disorders
The study results induce theories which propose that the weak performance in imitation in autism are secondary to a deficit of praxis
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