I feel when I am in proper discursive meditation that I am developing mental strength to exist after my material body is gone. I feel comfortable that this state is conditioning and disciplining my mind to remain somewhat conscious after material death. The stronger my practice, perhaps the more functional my mind will be in the next realm.

A Buddhist told me once he thought after humans die they go through a kind of heavy hallucination until they find their next body. I don't entirely believe this, though I find it helpful to explain what it might be your mind is up against after the body dies. Is this way of thinking about the function of the mental sheath roughly correct?