Interesting article in Sat telegraph yesterday about young boy with ASD. Went horseriding a bit, then went to Mongolia horseriding, parents saw big improvement in him after this. Temple Grandin (Prof of animal science who is autistic) thought might be the continual working to keep balance on horse had improved receptors in brain. Book and film made 'The Horse boy: A father's miraculous journey to heal his son'. Parents careful to say not a cure but has helped a lot...
Does seem to link in with people ASD having difficulties with vestibular and proprioception
www.telegraph.co.uk/outdoors