raphe nuclei

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A series of neuron clusters resembling stitches connecting the two halves of the medulla oblongata. They release serotonin and may be implicated in slow-wave sleep. Also called the raphe system, and sometimes spelt raphé nuclei or raphé system, probably in the mistaken belief that the word is of French origin. raphe nucleus sing. [From Greek rhaphe a seam, from rhaptein to sew together]

Subjects: Psychology.

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