I thought this was interesting.
From:
www.sandiego.edu/soles/documents/Session%20Descriptions%20Summer%2008.pdf
Session 2: Sensory and Movement Differences: How do these differences affect a person?s participation
Martha R. Leary, MA, CCC-SLP
People labeled with autism move their bodies in ways that are unfamiliar to most of us. Some people rock, repeatedly touch an object, jump and finger posture while other people come to a standstill in a doorway, sit until cued to move and turn away when someone beckons. Some behaviors may not be intentional, but rather artifacts of the difficulties a person may be having in organizing and regulating sensation and movement. Other behaviors may be subtle signs of the desire for relationship or expressions of meaning. Detailed personal descriptions of movement and sensory differences found in other disabilities have given us some clues as to what it may be like to deal with various symptoms such as compelling impulses, a loss of conscious control, lack of initiation, akinetic moments and unusual ways of being in the world.
And this:
www.autcom.org/articles%5CMovement.html