enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Reticular formation - Wikipedia

    en.wikipedia.org/wiki/Reticular_formation

    Ascending reticular activating system. Reticular formation labeled near center. The ascending reticular activating system (ARAS), also known as the extrathalamic control modulatory system or simply the reticular activating system (RAS), is a set of connected nuclei in the brains of vertebrates that is responsible for regulating wakefulness and ...

  3. Pedunculopontine nucleus - Wikipedia

    en.wikipedia.org/wiki/Pedunculopontine_nucleus

    The pedunculopontine nucleus (PPN) or pedunculopontine tegmental nucleus (PPT or PPTg) is a collection of neurons located in the upper pons in the brainstem. [1] [2] It is involved in voluntary movements, [3] arousal, and provides sensory feedback to the cerebral cortex and one of the main components of the ascending reticular activating system.

  4. Locus coeruleus - Wikipedia

    en.wikipedia.org/wiki/Locus_coeruleus

    It is a part of the reticular activating system in the reticular formation. [ 3 ] The locus coeruleus, which in Latin means "blue spot", is the principal site for brain synthesis of norepinephrine (noradrenaline).

  5. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    Ascending reticular activating system [ edit ] The ascending reticular activating system consists of a set of neural subsystems that project from various thalamic nuclei and a number of dopaminergic , noradrenergic , serotonergic , histaminergic , cholinergic , and glutamatergic brain nuclei.

  6. Arousal - Wikipedia

    en.wikipedia.org/wiki/Arousal

    Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception. It involves activation of the ascending reticular activating system (ARAS) in the brain, which mediates wakefulness, the autonomic nervous system, and the endocrine system, leading to increased heart rate and blood pressure and a condition of sensory alertness, desire ...

  7. Neural correlates of consciousness - Wikipedia

    en.wikipedia.org/wiki/Neural_correlates_of...

    One such example is the heterogeneous collection of more than two dozen nuclei on each side of the upper brainstem (pons, midbrain and in the posterior hypothalamus), collectively referred to as the reticular activating system (RAS). Their axons project widely throughout the brain.

  8. Thalamic reticular nucleus - Wikipedia

    en.wikipedia.org/wiki/Thalamic_reticular_nucleus

    Its function is modulatory on signals going through the thalamus (and the reticular nucleus). The thalamic reticular nucleus receives massive projections from the external segment of the globus pallidus, thought to play a part in disinhibition of thalamic cells, which is essential for initiation of movement (Parent and Hazrati, 1995). [9]

  9. Parabrachial nuclei - Wikipedia

    en.wikipedia.org/wiki/Parabrachial_nuclei

    The subparabrachial nucleus (also known as the Kölliker-Fuse nucleus, or diffuse reticular nucleus) regulates the breathing rate. It receives signals from the caudal , cardio-respiratory part of the solitary nucleus and sends signals to the lower medulla oblongata , the spinal cord , the amygdala and the lateral hypothalamus .