What I'm trying to figure out is the interplay between the transmitters, and "semantic" (sorry, making this term up, not a neurologist, basically your represent

What I'm trying to figure out is the interplay between the transmitters, and "semantic" (sorry, making this term up, not a neurologist, basically your representation of the world) layers in the brain. What interpretation mechanism are affected by brain state to distort your perception of so many things.