Guddens ganglion

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Guddens ganglion --> interpeduncular nucleus

a median, unpaired, ovoid cell group at the base of the midbrain tegmentum between the cerebral peduncles; it receives the retroflex fasciculus from the habenula, and projects to the raphe region (raphe nuclei) and periaqueductal gray substance of the midbrain.

Synonym: nucleus interpeduncularis, ganglion isthmi, guddens ganglion, intercrural ganglion, interpeduncular ganglion.