The nucleus accumbens (NAcc), also known as the accumbens nucleus or as the nucleus accumbens septi (Latin for nucleus leaning against the septum), is a collection of neurons within the striatum. It is thought to play an important role in reward, laughter, pleasure, addiction, fear, and the placebo effect.
Each half of the brain has one nucleus accumbens. It is located where the head of the caudate and the anterior portion of the putamen meet jus...
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