The body's main daily clock made up of many interacting rhythm neurons

The suprachiasmatic nucleus (SCN) functions as the central circadian pacemaker in mammals, coordinating physiological events over a 24-hour cycle.

• Circadian rhythms are 24-hour cycles that regulate various physiological processes in the body.
• The SCN is composed of different types of GABAergic neurons and glial cells that work together to maintain circadian rhythms.
• Individual SCN neurons can oscillate independently, but their communication is crucial for synchronized circadian timing.
• The specific mechanisms of how the SCN network operates are not yet fully understood.
• Recent studies are exploring the roles of various neuropeptides and the neurons that express them in the SCN network.

Simplified