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Heart Rate Variability: R-R Interval & RMSSD (2D)

A Canvas2D companion to the 3D HRV lab: the same R-R interval model — a mean-reverting random walk plus respiratory sinus arrhythmia — drives a scrolling ECG-like trace and live RMSSD / heart-rate readouts.

Medical Technology & Imaging Physics2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion drives the same R-R interval model as the 3D version — a mean-reverting random walk plus a respiratory sinus arrhythmia sine term — through a flat scrolling ECG-like trace instead of an orbiting scene, so the beat-to-beat stretching and compressing that RMSSD measures is easier to read straight off the line.

⚙ Under the hood

Each R-R interval is the state's mean interval plus a mean-reverting random walk, a sine-shaped RSA term at the state's breathing frequency, and small jitter; RMSSD is the root-mean-square of successive R-R differences over a rolling 20-beat buffer.

heart rate variabilityrmssdr-r intervalautonomic nervous systemecg2D

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install