The sinoatrial node, rebuilt: a thousand cells, each charging toward a threshold at its own rate, firing, emptying, and shoving its neighbours a little further up their slope. Nobody is elected. The fastest cell simply fires first, and the wave it starts resets everyone before their own time comes — so the whole plate beats at the tempo of its quickest voice.
tap to plant a faster cell where you tap — an ectopic focus — and watch the wave change its origin · f or fibrillate scatters every cell and the vote is recounted · the trace along the foot is the plate’s ECG · the first tap unlocks a soft beat