That training to think, react and do includes not just conceptual knowledge but muscular and sensory memory -- and starts the moment we're born.

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The Memory Characteristics Questionnaire tests for sensory and emotional details of recollections and how people relive them in space and time.

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Targacept's pill is more refined, he says, because it binds with a subtype of neuronal nicotinic receptor situated mostly in parts of the brain that process sensory information and aid in learning and short-term memory.

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