Hi, I have a son who has Asperger's's.  He and I were playing around the other day making silly faces and I noticed he can't do many of the basic tongue tricks, ex. roll his tongue, or even put the tip of his tongue to the roof of his mouth.  Instead of the tip he pulls the center of his tongue to the roof of his mouth while the rest remains flat, or even concave.  Does that have anything to do with his disorder? I have noticed that tongue control is used to determine neurological problems, could it be something more?