dorsal raphe nucleus


Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia, Wikipedia.

dorsal raphe nucleus

A midbrain nucleus that lies in the midline in the tegmentum, below the periaqueductal gray. It sends serotonergic axons to the striatum via the medial forebrain bundle, and it receives axons from the interpeduncular nucleus.
See: raphe nucleus
See also: nucleus
References in periodicals archive ?
Serotonin 1B autoreceptors originating in the caudal dorsal raphe nucleus reduce expression of fear and depression-like behavior.
Dorsal raphe nucleus serotonergic neurons innervate the rostral ventrolateral medulla in rat.
The hypothalamus plays a role in the onset and maintenance of sleep while the locus ceruleus and the dorsal raphe nucleus play a role in the onset and maintenance of REM sleep.