Overview

ascending reticular activating system


Show Summary Details

Quick Reference

The ascending fibres of the reticular formation in the brainstem, defined functionally rather than anatomically according to their control of the level of physiological arousal or activation of the cerebral cortex, essential for wakefulness, attention, and concentration. Also called the reticular activating system (RAS). See also cerveau isolé. Compare descending reticular formation. ARAS abbrev.

Subjects: Psychology.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.