These signals that encode the quantity and quality of food you just ate converge on a brain region called the nucleus tractus solitarius (NTS), which is the junction point of the vagus nerve with the brain stem. The NTS integrates the various signals ascending from the digestive tract and produces a level of satiety that’s appropriate for what you ate. These complex computations happen beyond your conscious awareness, and the only information your conscious brain receives is whether or not you feel full.
no they didnt sever all cranial berve because the vagus nerve is still intact.
