Perhaps no region of the brain is more fittingly named than the claustrum, taken from the Latin word for ‘hidden or shut away.’ The claustrum is an extremely thin sheet of neurons deep within the cortex, yet it reaches out to every other region of the brain. Its true purpose remains ‘hidden away’ as well, with researchers speculating about many functions. For example, Francis Crick of DNA-discovery fame believed that the claustrum is the seat of consciousness, responsible for awareness and sense of self.
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