Question

The reticular activating system (ras) is the part of the brain where the world outside, and thoughts and feelings inside, meet.

Answer 1

RAS is also a large network of nerve pathways that are connected in the brain (the brainstem connecting the spinal cord, cerebrum and cerebellum) in order to regulate wakefullness and sleep-wake transition, It is also known as the extrathalamic control modulatory system.