http://www.cbsnews.com/news/brain-study-switches-a-womans-consciousness-on-and-off/
Another clue to consciousness....
Scientists have wondered for some time if a person could experience a state of unconsciousness without entering into a deep sleep. Now a new anecdotal study, published in the journal Epilepsy and Behavior, demonstrates it may be possible to turn someone's consciousness on and off like the switch of a light.
Another clue to consciousness....