The absence of a hypothalamic neural center that produces orexin has been linked to

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The hypothalamic neural center that produces orexin is responsible for regulating wakefulness and sleep. Narcolepsy is a sleep disorder that is linked to the absence or deficiency of orexin in the brain, leading to excessive daytime sleepiness and frequent episodes of sudden sleep attacks. Insomnia, sleep apnea, and night terrors are not directly linked to orexin deficiency.

The Absence of a Hypothalamic Neural Center That Produces Orexin