locus coeruleus


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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
References in periodicals archive ?
Posteriormente, la senal dolorosa toma diferentes caminos dirigidos a la sustancia gris periacueductal, los nucleos del rafe, el locus coeruleus y el nucleo salivatorio superior.
2005, Network reset : a simplified overarching theory of locus coeruleus noradrenaline function, Trends in Neuroscience, 28, 11, 574-82.
The activities of the locus coeruleus (LC) noradrenergic (NA-ergic) neurons have been causally and positively correlated to behavioural and EEG indices of arousal (5052) as defined by cortical low voltage and fast EEG waves (desynchronization).
Likewise, as odor identification improved among patients with incidental Lewy bodies, the percentage with Lewy bodies in the substantia nigra or the locus coeruleus decreased significantly.
These results allow one to speculate that the locus coeruleus (Aston-Jones et al.
Clonidine blocks stress-induced reinstatement of heroin seeking in rats: an effect independent of locus coeruleus noradrenergic neurons', Eur.
Although the mechanisms underlying age-related cognitive impairment are not completely understood at this time, there have been some recent advances suggesting the possible role of the noradrenergic system, including the locus coeruleus (LC), and perhaps coupled with the cholinergic system, including the nucleus basalis magnocellularis (Zornetzer, 1986).
2 agonists produce analgesia and sedation by inhibition of substance P release in the nociceptive pathway at the level of the dorsal root neuron and by activation of 02 adrenoceptors in the locus coeruleus.
Noradrenaline (NA) system, encompassing NA neurons in locus coeruleus and nucleus tractus solitiarius is well positioned to regulate motivational control; however its exact contribution is not fully understood.