Home▸Medicine & Biophysics▸Gamma Loop 2D: Afferent Strip-Chart & Phase Portrait

Gamma Loop 2D: Afferent Strip-Chart & Phase Portrait

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

Details

CategoryMedicine & Biophysics

RenderingCanvas 2D

DifficultyAdvanced

Target FPS60

ControlsSliders adjust extrafusal muscle length, gamma-static drive to bag2/chain fibers, and gamma-dynamic drive to the bag1 fiber; checkboxes toggle auto-oscillating passive stretch/release and alpha-gamma coactivation, and a button triggers a voluntary contraction. The canvas shows a scrolling six-channel strip-chart (length, velocity, γ-static, γ-dynamic, Ia rate, II rate) above a stretch-velocity phase-plane portrait.

neurophysiologymuscle spindlereflexmotor controlproprioceptionphase portrait2D

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This is the 2D companion to the 3D gamma-loop fiber-bundle simulator: the identical fusimotor control equations — gamma-static drive raising baseline (static) sensory bias, gamma-dynamic drive raising velocity gain, and alpha-gamma coactivation keeping the spindle taut during a voluntary contraction — computed independently and read out as a live multi-channel strip-chart monitor plus a stretch-velocity phase-plane trajectory, the way a real electrophysiology recording actually looks, instead of an anatomical render of intrafusal fibers.

⚙ Under the hood

2D companion to the 3D gamma-loop model: the same fusimotor equations for muscle spindle Ia/II sensitivity, driven live into a multi-channel afferent strip-chart monitor and a stretch/velocity phase-plane portrait instead of a rendered fiber bundle. Independently drive gamma-static and gamma-dynamic fusimotor input and trigger a voluntary contraction to watch the Ia/II traces and the phase-plane trajectory respond in real time.

neurophysiologymuscle spindlereflexmotor controlproprioceptionphase portrait2D

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