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Bioelectronics: Neural Interface Simulator

Interactive neural-interface simulator: inject an action potential anywhere along a myelinated axon, watch it propagate — continuously or via saltatory jumps between Nodes of Ranvier — and record it with a draggable multi-electrode probe with tunable detection threshold.

Neuroscience & Biophysics3DModerate60 FPS

Details

CategoryNeuroscience & Biophysics

RenderingThree.js · WebGL

DifficultyModerate

Target FPS60

ControlsClick the axon to inject a stimulus that propagates in both directions; myelination slider (0-100%) sets conduction speed and whether propagation is continuous or saltatory between Nodes of Ranvier; detection-threshold slider (5-90 mV) sets the minimum voltage the electrode must see to count a spike; drag the cyan electrode probe along the axon to reposition it; Reset clears all active spikes and counters.

Three.jsneurosciencebioelectronicsaction potentialsaltatory conductionneural interface

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This simulator visualizes how a neural interface records signals from an axon. Click anywhere along the fibre to inject an action potential and watch it propagate in both directions — continuously along bare membrane, or in fast saltatory jumps between Nodes of Ranvier once myelination is high. A draggable multi-electrode probe picks up the passing signal, and its recorded amplitude depends on both how close it sits to an exposed node and the detection threshold you set. Adjust myelination and threshold to see how real neural implants trade off conduction speed against how easy a spike is to record.

⚙ Under the hood

Interactive axon + multi-electrode array: inject an action potential anywhere along a myelinated axon and watch it propagate to the Nodes of Ranvier via saltatory conduction, with a draggable electrode probe recording the passing signal on a live oscilloscope trace.

Three.jsneurosciencebioelectronicsaction potentialsaltatory conductionneural interface

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install