Cyperium said:Could there be another subjective in it's own right aside from ourselves? Could there be another awareness in the same body, but only at times strong enough to take control?
If not, why couldn't it be?
The correct question is "if so, why should it be?"
One's cognitive awareness comes from the neurons and synapses that fire in the brain. The brain is one's own. There are not the brain's of others that have been shown to co-exist in a single body. It has been shown, however, that neural pathways can become damaged or faulty in the brain, presenting all sorts of problems such as not recognizing yourself in a mirror, losing control over limbs that may even attempt to strangle the individual, believing one's parents are impostors, or thinking that one's missing/amputated limb can still feel pain or even touch objects.
This isn't due to "another awareness" in the same body, but due to faulty/damaged neural pathways.
There is no such thing as "demon possession" or "possession" by others of the individual. It simply doesn't happen. Nor can it at current levels of technology.