Reducing that requirement helps save the brain cells which can be revived later when the coma is withdrawn.

No. It's very much like a general anesthesia. They do not remember.

You have to take it in context. You don't use induced coma unless you are really in a truly life-threatening situation.

Stimuli to the patient cause the pressure in the brain to go up. By reducing the stimuli, you are less likely to have trouble with the swelling and pressure in the brain.

I like nonsense; it wakes up the brain cells.

My brain cells are dying in their trillions.