Open navigation menu
Biology
Neuron
Loading resource…
Loading resource…
Preparing the simulation…
Ions, channels and membrane are magnified for viewing; ion counts are illustrative.
The pulse travels along the axon to the cross section before the channels open.
Preparing the simulation…
Model time (ms); motion is slowed for observation.
Model notes
- A simplified Hodgkin–Huxley model of action potentials and Na⁺/K⁺ channels; its resting potential is −65 mV (about −70 mV in many neurons). It does not represent every type of neuron.
- The pulse travels along the axon; ions cross the membrane locally. The membrane colour shows the potential: blue when the inside is negative, red when it is positive. Displayed ion counts, sizes and speed are not to scale.
- Concentrations follow the model and remain synchronized with ion motion; no ion-pump mechanism is simulated here.
- The chart shows membrane potential against model time. Replay restores recorded states; it does not reverse biological processes.