Definitions for "Locus Ceruleus"
Nerve cluster that lies near the brain's fourth ventricle, where Norepinephrine is concentrated.
The major group of norepinephrine-utilizing neurons in the brain, it plays a role in mediating specific functions relating to memory, emotion, arousal, and attention.
The locus ceruleus is a small pigmented region in the floor of the fourth ventricle of the brain; the region is made up of about 20,000 melanin-pigmented neuronal cell bodies whose norepinephrine-containing axons have a remarkably wide distribution in the cerebellum as well as in the hypothalamus and cerebral cortex of the brain.