Circadian Rhythm
Directly measured, standardized, or well-supported in mainstream scientific or technical literature.
This entry documents a measurable or standardized frequency reference. The atlas is a research and practice guide, not a medical diagnostic instrument.
Review the evidence modelThe ~24-hour biological clock governing sleep-wake cycles, hormone release, body temperature, and metabolic processes. Driven by the suprachiasmatic nucleus (SCN) in the hypothalamus.
Sources
Used for heart, breath, circadian, and other biological rhythm references.
Cardiology, physiology, chronobiology, and cell biology references.
Octave Ladder
Every audible octave of this frequency — the same tone, higher and lower.
Nearby in the Atlas
Entries within ±35 cents of this tone when reduced to the same octave — candidates for pairing or comparison.