Hi, i'm not sure how qualified I am to answer these questions, but I can try...
1) Sensory overload does not have to occur for a diagnosis of ASD to be made, so, in theory, there may well be individuals on the spectrum who don't experience sensory overload (I think).
2) To me, emotional overload is not the same as sensory overload, as emotional overload concerns the emotions, whereas sensory overload concerns touch, taste, smell, sight and sound, though other people might have different opinions to me, i'm not sure. Also, what do you mean by 'emotional over processing'?
3) I don't really know what 'sensory over processing' is either, though I know what Sensory Processing Disorder is, it would be good if you could explain, because i'd be interested to know.
Um, hope I helped...
