Circadian Rhythm Reset at Midnight — SCN Clock Cell

This scene renders a stylized cluster of suprachiasmatic-nucleus (SCN) neurons — the brain's master circadian clock — as glowing spheres whose colour pulses with a simplified clock-gene expression cycle, running roughly once every 24 hours. A light source above the cluster represents light input reaching the SCN through melanopsin-containing retinal ganglion cells; its brightness, duration, timing and blue-light content drive a real saturating dose-response suppression of downstream melatonin and a genuine phase-response-curve shift of the clock itself, so the same light dose delays the rhythm if it lands before the body's temperature minimum and advances it if it lands after. Place the exposure on the mini timeline, watch the cluster's pulse react tonight, then toggle to the shifted "tomorrow" cycle to see the reset take hold.