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SCN Pacemaker Function

Meaning

The intrinsic ability of the Suprachiasmatic Nucleus (SCN), a small nucleus in the hypothalamus, to generate and maintain the near-24-hour rhythm that dictates the timing of nearly all biological processes. As the body’s master circadian clock, the SCN coordinates the phase of peripheral oscillators and controls the diurnal release of key hormones, including cortisol and melatonin. A robust pacemaker function is essential for metabolic health, cognitive performance, and restorative sleep quality.