A lifetime of habits

http://en.wikipedia.org/wiki/File:Gray994.png

Looking at the thickness of the genioglossus in the image linked I see only the left muscle as the head is cut down the middle in the sagittal view. In order for the left tongue to be used to talk I suppose the muscles shape must be directed by the opposing cerebral hemisphere unless the use is a reflexive action based on the mirror muscles contraction or relaxation.

What I feel is I have two tongues where before I had one tongue. My lifetime of habits prevented me from feeling what I now suspect to be true.