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Re:The neuroscience of itching by sc on Saturday June 28, 2008 @11:47AM (#230630)
A quick summary (though the article is well worth the read):

Perception may be mostly memory and the brain's best guess of a situation, and to a very minor extent, the outlying, sensory nerve signals.

Re:The neuroscience of itching by oPerrin on Saturday June 28, 2008 @02:20PM (#230679)
Perfectly in tune with On Intelligence - go read it if you found this article insightful.