Examlex
About one month after being infected,most people with HIV begin to display symptoms.
SCN
Stands for the Suprachiasmatic Nucleus, a small region in the brain that regulates the circadian rhythms, including sleep-wake cycles.
Pineal Gland
A small endocrine gland in the vertebrate brain that produces the hormone melatonin, involved in regulating sleep patterns.
Melatonin
A hormone produced by the pineal gland that regulates sleep and wakefulness cycles.
Hypnagogic Sensations
Experiences occurring at the onset of sleep, often involving visual, auditory, or tactile hallucinations.
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