Which nerve network in the brainstem plays an important role in controlling arousal?

Question

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The reticular formation is a nerve network in the brainstem that plays a key role in regulating arousal, sleep, and attention. It receives input from a variety of sensory and cognitive systems and helps to coordinate and modulate activity in the brain. Damage to the reticular formation can lead to a range of symptoms, including coma, stupor, and difficulty maintaining wakefulness.

Which Nerve Network in the Brainstem Plays an Important Role