Wikipedia about Locus coeruleus

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    • Published: 09-23-2014 08:37 am
    • http://en.wikipedia.org/wiki/Locus_coeruleus

      "The locus coeruleus (also spelled locus caeruleus or locus ceruleus) is a nucleus in the pons (part of the brainstem) involved with physiological responses to stress and panic. It was discovered in 1784 by Félix Vicq-d'Azyr,[1] redescribed later by Johann Christian Reil in 1809[2] and named by Joseph Wenzel and Karl Wenzel brothers in 1812.[3]

      The locus coeruleus is the principal site for brain synthesis of norepinephrine (noradrenaline). The locus coeruleus and the areas of the body affected by the norepinephrine it produces are described collectively as the locus coeruleus-noradrenergic system or LC-NA system.[4] Norepinephrine may also be released directly into the blood from the adrenal medulla."

      t is related to many functions via its widespread projections. The LC-NA system modulates cortical, subcortical, cerebellar, brainstem, and spinal cord circuits. Some of the most important functions influenced by this system are:[6][7]

      The locus coeruleus is a part of the ascending reticular activating system, and is almost completely inactivated in rapid eye movement sleep.[8]
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