Simulation

Peripheral nerve cross-section simulation for stimulation and recording tests.

New here? Read the quick guide → How to use this simulation

Library

Geometry

Axon sites (count)

What is this?

How many axon "sites" are rendered inside the fascicle. These are visual points (not a biophysical axon model). More sites = denser firing + heavier CPU.

min / max

Nerve diameter is fixed at 2.0 mm. Single fascicle (simplified). Axons are non-overlapping grid sites (visual exaggeration).

Stimulation

Stim amplitude (a.u.)

What is this?

A proxy "current amplitude" used to compute a simple exponential field around each intrafascicular electrode. Higher = more axons cross threshold.

min / max

Field falloff

What is this?

Sets how quickly the proxy field decays with distance. Larger values spread stimulation farther; smaller values make it more localized.

min / max

Threshold (proxy)

What is this?

Visual threshold only. During a pulse, sites with |field| ≥ threshold are highlighted; this does not calculate evoked neural spikes.

min / max

Frequency (Hz)

What is this?

Frequency of the sine-wave stimulation during the train.

min / max

Train duration (ms)

What is this?

How long the sine-wave stimulation train runs when you click Pulse. Sites above the proxy threshold are highlighted during the train; no evoked-spike solver is used.

min / max

View

Scroll to zoom. Drag empty space to pan. Drag electrodes to move them.

Selection

Type-

ID-

X-

Y-

Recording enabled

Notes

Simplified model. Axon firing uses randomized per-axon timing with a minimum 200 ms refractory interval. Recording shows synthetic, distance-weighted firing events per intrafascicular electrode (up to 10 graphs). Event times follow their schedule, independently of screen refresh. Dashed stimulus-start markers are separate from firing events; stimulation changes visual highlighting only.

Peripheral nerve cross-section

Zoom/pan + stimulation + recording

Stim waveform (proxy)

t=0 at 75% width • shows injected current proxy