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Suprachiasmatic Nucleus Signaling

Meaning

Suprachiasmatic Nucleus Signaling refers to the complex neurochemical communication originating from the Suprachiasmatic Nucleus (SCN), a small but critical region in the hypothalamus that functions as the body’s master circadian pacemaker. This signaling regulates the approximately 24-hour rhythms of virtually all physiological processes, including the sleep-wake cycle, body temperature, and the pulsatile secretion of numerous hormones. Its integrity is paramount for synchronizing internal biology with the external light-dark cycle.