Stereotaxis

Humans have been subjected to deep hypothermic cardiac arrest for aortic surgery for over an hour without gross neurological deficits. The subjects reached complete electrocerebral silence (zero electroencephalographic bispectral index) between temperatures of 16°C and 24°C and were re-warmed without neurological deficit, confirming that dynamic brain activity can be lost and regained without loss of personal identity. Benjamin P. Best. Pretty wild, huh? (via keyholez)