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Related to locus coeruleus: Raphe nuclei
locus coeruleus, locus ceruleus
A bluish reticular nucleus in the central gray area of the caudal midbrain and part of the reticular formation. Its output axons project widely and diffusely to all parts of the central nervous system. Signals from the locus coeruleus appear to enhance the overall attentiveness level of the brain.
See also: locus