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Epidural Stimulation for Stepping Recovery (2D)

2D canvas model of epidural spinal cord stimulation for locomotor rehabilitation: a real coupled half-center CPG oscillator stays silent below its own excitation threshold — tune stimulation amplitude, frequency and electrode position to push it over threshold and watch alternating flexor/extensor stepping emerge.

Medicine & Biophysics2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

After a spinal cord injury, the neural circuitry that generates walking rhythm often survives below the lesion — it just loses the excitatory drive normally sent down from the brain. Epidural electrical stimulation (EES) restores enough of that drive to switch the circuit back on. This 2D canvas simulator draws a lumbosacral cord segment, a movable electrode, and a live scrolling trace of a real half-center CPG (Matsuoka oscillator) with Henneman size-principle recruitment — tune stimulation amplitude, frequency and rostrocaudal position and watch the oscillator sit silent below its own excitation threshold, then burst into fused alternating stepping, a choppy low-frequency twitch, or a high-frequency co-contraction, exactly as the same equations do in the 3D model.

⚙ Under the hood

Move a virtual epidural electrode along the lumbosacral spinal cord and tune stimulation amplitude, frequency and injury completeness to watch motor-pool recruitment drive a half-center CPG into alternating stepping, choppy twitching, or co-contraction.

spinal cord injuryneurorehabilitationepidural stimulationCPGlocomotionneuroscience

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