reticular activating system

the system of nerve pathways in the brain concerned with the level of consciousness - from the states of sleep, drowsiness, and relaxation to full alertness and attention. The system integrates information from all of the senses and from the cerebrum and cerebellum and determines the overall activity of the brain and the autonomic nervous system and patterns of behaviour during waking and sleeping.

Medical dictionary. 2011.

Look at other dictionaries:

  • reticular activating system — n a part of the reticular formation that extends from the brain stem to the midbrain and thalamus with connections distributed throughout the cerebral cortex and that controls the degree of activity of the central nervous system (as in… …   Medical dictionary

  • Reticular activating system — Infobox Brain Name = Reticular activating system Latin = GraySubject = GrayPage = Caption = Deep dissection of brain stem. Ventral view. (Reticular formation labeled near center.) Caption2 = IsPartOf = Components = Artery = Vein = BrainInfoType …   Wikipedia

  • reticular activating system — noun the network in the reticular formation that serves an alerting or arousal function • Syn: ↑RAS • Hypernyms: ↑neural network, ↑neural net • Part Holonyms: ↑reticular formation, ↑RF …   Useful english dictionary

  • reticular activating system — the system of nerve pathways in the brain concerned with the level of consciousness – from the states of sleep, drowsiness, and relaxation to full alertness and attention. The system integrates information from all of the senses and from the… …   The new mediacal dictionary

  • Ретикулярная активирующая система (reticular activating system) — Ретикулярная формация (РФ) простирается от каудального отдела продолговатого мозга до рострального отдела промежуточного мозга. Ее нейроны образуют сетчатую структуру ствола мозга, в ячейках к рой закреплены группы специфических ядер, снабжающих… …   Психологическая энциклопедия

  • Формация Ретикулярная, Система Ретикулярная Активирующая (Reticular Activating System) — совокупность нейронов и соединяющих их нервных волокон, расположенных в стволе мозга и образующих сеть. Ретикулярная формация связана со всеми органами чувств, двигательными и чувствительными областями коры большого мозга, таламусом и… …   Медицинские термины

  • Reticular formation — Brain: reticular formation Coronal section of the pons, at its upper part. (Formatio reticularis labeled at left.) …   Wikipedia

  • reticular formation — (also reticular activating system) noun Anatomy a diffuse network of nerve pathways in the brainstem connecting the spinal cord, cerebrum, and cerebellum …   English new terms dictionary

  • reticular formation — noun a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone • Syn: ↑RF • Hypernyms: ↑neural network, ↑neural net • Part… …   Useful english dictionary

  • system — 1. [TA] A consistent and complex whole made up of correlated and semiindependent parts. A complex of functionally related anatomic structures. 2. The entire organism seen as a complex organization of parts. 3. Any complex of structures… …   Medical dictionary

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