raphe nucleus


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Related to raphe nucleus: serotonin, Nucleus accumbens, Locus coeruleus, Median raphe nucleus

raphe nucleus

Any of a set of midline reticular nuclei in the midbrain and hindbrain tegmentum that send serotonergic axons widely throughout the forebrain brain via the medial forebrain bundle. Raphe nuclei appear to regulate sleep and aggressive behavior and to influence pain perception.
See also: nucleus
References in periodicals archive ?
In light of the above, this study investigated the effect on the intra-median raphe nucleus (MRN) of injection of xanthone obtained from Kielmeyera coriacea stems, and compared with drugs that selectively interfere with the activity of MRN serotonergic neurons, the 5-[HT.
In this context, intra dorsal raphe nucleus (DRN) or MRN microinjection of [Way.
Serotonergic neurons in the median raphe nucleus regulate inhibitory avoidance but not escape behaviour in the rat elevated T-maze test of anxiety.