For a short time....: Once decapitation occurs, blood flow to the brain ceases. At that time, oxygen supply to the brain ceases. Under most circumstances, consciousness will continue for about 10-15 seconds then perception fades. Since I have never been decapitated, i can't be more specific. Further, there have never been randomized, prospective trials on the effects of decapitation. Expert opinion will have to do.
Answered 1/23/2013
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