Here is a story about Sam Goddard, 23, of Brisbane, Australia, who suffered a series of storkes after palying football in February of 2010. His fiance gave him Ambien which brought him out of his stroke. I don't know if it is the same story, but there are actually several cases in which Ambien brought people out of coma for a period of time until the drug wore off.
There are so many cases of people coming out of comas and remembering exact conversations which doctors continue to shrug off as mere anomalies of the brain. It boggles one's mind to realize how deeply ingrained is the false belief that consciousness is an epiphenomenon of the brain, when there is so much evidence and even logic to explain otherwise.
Sensory's reference to the neurosurgeon who realized he was just a radio repairman could have been about
Dr. Eben Alexander, a neurosurgeon who had a near death experience and realized that his consciousness was not a product of his brain, and that his brain mainly functioned as a kind of radio receiver.