The reticular activating system at the core of the brainstem modulates cycles of rest and activity by
A) monitoring incoming sensory information and promoting wakefulness or allowing sleep in higher brain regions.
B) tracking hormone levels in the bloodstream.
C) conducting motor commands from the brain to the body.
D) balancing incoming sensory information with physiological functions.
E) coordinating muscle activity and maintaining balance.

Question

Quizplus · Accepted Answer

The reticular activating system (RAS) is responsible for regulating cycles of rest and activity. It does this by monitoring incoming sensory information and promoting wakefulness or allowing sleep in higher brain regions. The RAS is also responsible for filtering out irrelevant stimuli, allowing us to focus on what is important.

The Reticular Activating System at the Core of the Brainstem