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putamen
The putamen is a round structure located at the base of the forebrain (telencephalon). The putamen and caudate nucleus together form the dorsal striatum. It is also one of the structures that comprises the basal ganglia. Through various pathways, the putamen is connected to the substantia nigra and globus pallidus. The main function of the putamen is to regulate movements and influence various types of learning. It employs GABA, acetylcholine, and enkephalin to perform its functions. The putamen also plays a role in degenerative neurological disorders, such as Parkinson's disease.
==History==
The word "putamen" is from Latin, referring to that which "falls off in pruning", from "putare", meaning "to prune, to think, or to consider". It is pronounced ''pyu-ta'men''.
Until recently, very few studies were conducted that were focused specifically on the putamen. However, many studies have been done on the basal ganglia and the interactions among the brain structures it comprises. In the 1970s, the first single unit recordings were done with monkeys monitoring pallidal neuron activity related to movement.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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