Scientists from the University of Washington think they have found the switch of human brain. It‘s called claustrum (or fence). Scientists have experimented with patients who suffer from epilepsy, and appealed to the deep brain electrodes to stimulate parts of the brain and record the electrical activity - to find out which parts of the brain do not work correctly and cause seizures. Stimulation of claustrum literally turned on and off consciousness. A woman stopped to respond to external stimuluses, and only when the activity around claustrum stopped, she regained consciousness, not remembering when it was started.
Scientists suspect that claustrum brings together all the information in the brain. It collects the sight, smell, taste, thoughts, memories - all part of our personality that make us who we are.