A brain structure thought to be involved in dependence upon certain euphorigenic drugs is the nucleus accumbens.

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The nucleus accumbens is a brain structure that is involved in reward and reinforcement, as well as the development of addiction to certain drugs. It is a key part of the brain's reward system and is activated by drugs that produce a pleasurable or euphoric effect, such as cocaine, opioids, and amphetamines. Dysfunction in the nucleus accumbens has also been implicated in various psychiatric and neurological disorders, including depression, schizophrenia, and Parkinson's disease.

A Brain Structure Thought to Be Involved in Dependence Upon