Your decapitated head can remain alive for up to ten seconds.
Man gets decapitated sees his wife in the arms of another man cause she thinks he's dead, fades to black.
Just the scenario that came to mind when I read that.
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Edited by Zizzy: 7/2/2013 2:29:16 PMWell, 10 seconds of research found [url=http://science.howstuffworks.com/life/inside-the-mind/human-brain/10-brain-myths6.htm]this[/url], so I don't think you have anything to worry about.