How does a nerve fire? The Nobel-winning Hodgkin-Huxley equations reproduce the action potential from the dance of sodium and potassium channels — inject current and watch it spike.
Hodgkin-Huxley NeuronLive
the action potential
Controls
Presets
The Hodgkin-Huxley model — the Nobel-winning description of the nerve impulse — tracks voltage and the opening of sodium and potassium channels. Below a threshold current the neuron is silent; above it, it fires a train of action potentials whose rate climbs with the stimulus.
Reading this result: Above threshold: each stimulus recharges the membrane fast enough to re-trigger Na⁺ channels, so the neuron fires a repetitive train whose rate rises with the current.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
★ Sign in to save this setupSave your tuned setup, or drop this simulation into your own site, docs, or course page.
How it works
The Hodgkin-Huxley model describes the neuron membrane as a circuit of voltage-gated sodium and potassium conductances. Below a threshold stimulus the cell stays quiet; above it, positive feedback through the sodium channels triggers all-or-nothing action potentials, firing faster as the injected current grows. The cornerstone of computational neuroscience.
✦
Ask the AI about this model
The math, the assumptions, real-world uses, or a code translation — explained for this exact simulation.
Is this Hodgkin-Huxley neuron simulator tool really free?▾
Yes. Hodgkin-Huxley Neuron runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.