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Exploring the Brain's Relationship to Habits
Researcher Ann Graybiel studies how the human brain adapts to habits.
Credit: Bachrach Studios
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Photomicrograph of a section from the human brain, stained for acetylcholinesterase, an enzyme that degrades neurotransmitter acetylcholine. This staining procedure revealed pockets of low enzyme activity, which appear dark in this light-dark reversed image. These are the histochemically identified striosomes.
Credit: Ann Graybiel
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