A special group of neurons in the brain stem that plays a role in consciousness and the awake/sleep cycles is the ________.
A) thalamus
B) reticular activating system (RAS)
C) pineal gland
D) limbic system
E) cerebellum

Question

Quizplus · Accepted Answer

The reticular activating system (RAS) is responsible for regulating wakefulness, arousal, and attention. It is a group of neurons in the brain stem that filters sensory input and plays a crucial role in maintaining consciousness. The other options listed may have some connection to sleep and consciousness, but they do not have as direct a role as the RAS.

A Special Group of Neurons in the Brain Stem That