Unresolved within a limited window, such swelling can lead to the
death of brain cells
and parts of the brain such as the pituitary
and hypothalamus. The time to
death of the cells is referred to as the warm ischemic time.
There is no evidence whatsoever that a concussion will make anyone smarter.
There may or may not be a degradtion in your cognition, memory and reasoning. The human brain is very resilient.