from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the network in the reticular formation that serves an alerting or arousal function
Sorry, no etymologies found.
Notice how Valencia Ray held fast to her belief in the outcome, even when there was no evidence it could possibly happen; how precisely she visualized that outcome; how her reticular activating system brought just the right piece of information to mind at the critical moment; and how she took positive action on that information.
The part of your brain that does this filtering is a fine network of nerves at the base of your brain called the reticular activating system RAS.