Hodgkin-Huxley Spiking Neuron
Full conductance-based model: Na⁺/K⁺/leak currents, gating variables m, h, n
-65.0
V (mV)
0.05
m (Na act)
0.60
h (Na inact)
0.32
n (K act)
0
spikes
Stimulus
I_ext (µA/cm²)
10.0
Noise σ
0.5
I_ext drives membrane. Above ~7 µA/cm² produces repetitive spiking.
Conductances
g_Na (mS/cm²)
120
g_K (mS/cm²)
36
g_L (mS/cm²)
0.30
Classic HH: 120/36/0.3. Reducing g_Na eliminates spikes.
Reversal Potentials
E_Na (mV)
50
E_K (mV)
-77
E_L (mV)
-54
Nernst potentials set by ion concentration gradients.