Hodgkin–Huxley Gating Explorer
Inside the channels: m/h/n gating, α/β kinetics, voltage-clamp protocols, and TTX/TEA blockers.
Computational Neuroscience Wits · 2026
Honours course at the University of the Witwatersrand — the biophysics of single neurons up through spiking networks and how they learn.
FitzHugh–Nagumo — The Spike as Dynamics
The reduced two-variable model: phase-plane nullclines, limit cycles, and the Hopf bifurcation where a neuron tips into firing.
LIF Network Playground
Wire leaky integrate-and-fire neurons into a spiking network and watch the population dynamics emerge.
Surrogate-Gradient SNN
Why spikes break backprop — and the surrogate-gradient trick that trains a spiking network right in your browser.
NeuroAI AIMS
A NeuroAI course at the African Institute for Mathematical Sciences — from membranes and spikes to brain-style learning and decision-making.
Membrane Simulator
Nernst potentials, ion gradients, the Na⁺/K⁺ pump, and the equivalent circuit that turns them into membrane voltage.
Action Potential — Anatomy of a Spike
Sculpt the waveform by hand: resting potential, threshold, peak, and the refractory period. A descriptive diagram — no equations, just the shape.
Brain Backprop Explainer
An interactive explanation of how the brain might approximate backpropagation.
Drift-Diffusion Model
Watch evidence accumulate to a bound — the workhorse model of two-choice decisions and reaction times.
Random Dot Motion
The classic motion-coherence task used to probe perceptual decisions in the lab.