Subjective dawn (CT 0)
Subjective midnight (CT 12)
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The suprachiasmatic nucleus keeps the body's master clock steady not because any single neuron is a precise timer, but because thousands of noisy, individually-imprecise cellular oscillators couple to each other through VIP and GABA signaling and average their errors away. This simulator renders that population as a coupled-oscillator field using the Kuramoto model: each instanced neuron carries its own intrinsic period drawn from a realistic spread, coupling strength K sets how strongly neighbors pull each other into phase, and the live order parameter r quantifies exactly how synchronized the tissue is — from scattered arrhythmia to a sharp, coherent population rhythm. A light-pulse control resets phase the way the retinohypothalamic tract entrains the clock each morning, and a lesion control lets you scramble the population and watch synchrony rebuild from noise.