Your mind just acts from the way you perceive jumping into a TV or walking through a mirror feels like.
Say that i have never eaten a apple, i am in a LD and conjure one and eat of it,
my mind will have to establish what the apple tastes, and goes by what you percieve it would taste like,
you could will yourself to make it taste like a banana if you wish.

I hope i understood you correctly... if not, just... correct me.