The raphe nuclei ("raffe", Greek: ραφ? = seam) are a moderate-size cluster of nuclei found in the brain stem. Their main function is to release serotonin to the rest of the brain.

Raphe Nuclei
Raphe nuclei
Raphe Nuclei
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The raphe nuclei of the cat brain stem: A topographical atlas of their efferent projections as revealed by autoradiography
The raphe nuclei of the brain stem in the cat. III. Afferent connections
The raphe nuclei of the brain stem in the cat. I. Normal topography and cytoarchitecture and general discussion
The organization of divergent axonal projections from the midbrain raphe nuclei in the rat
Descending serotonergic, peptidergic and cholinergic pathways from the raphe nuclei: A multiple transmitter complex
Selective prefrontal cortical projections to the region of the locus coeruleus and raphe nuclei in the rhesus monkey
Origin and functional role of the extracellular serotonin in the midbrain raphe nuclei.
Do raphe nuclei of the reticular formation have a neurosecretory or vascular sensor function?
Inhibitory influence of GABA on central serotonergic transmission. Raphe´nuclei as the neuroanatomical site of the GABAergic inhibi...