There's a book called The Reason I Jump written by a non-verbal autistic boy (dictated by pointing at a printed keyboard), where he describes being able to understand most things (except at times where he is overloaded by sensory stimuli), but is often unable to control his response as he wishes.
This has lead me to believe that sensory-motor differences may be the primary difference between autistic and neurotypical people.
Yes. I wrote my thesis on creating a piece of autism technology to teach people what it was like to have Autism. And through my work I came to the same conclusion.
Many people on the autistic spectrum find their sensory issues traumatic. I've interviewed a fair few of them and it sounded awful. It wouldn't surprise me if there's correlation. Because the two are quite possibly linked, especially for DTD rather than PTSD.
This has lead me to believe that sensory-motor differences may be the primary difference between autistic and neurotypical people.