Table 1. Parameter values for STN and GPe neurons.
Parameter | Value | Dimension | |
STN neuron | GPe neuron | ||
C | 1 | 1 | pF/µm2 |
I app | 32 | 2 | pA/µm2 |
g L | 2.25 | 0.1 | nS/µm2 |
g K | 45 | 30 | nS/µm2 |
g Na | 37.5 | 120 | nS/µm2 |
g T | 0.5 | 0.5 | nS/µm2 |
g Ca | 0.5 | 0.15 | nS/µm2 |
g AHP | 9 | 30 | nS/µm2 |
V L | −60 | −55 | mV |
V K | −80 | −80 | mV |
V Na | 55 | 55 | mV |
V Ca | 140 | 120 | mV |
K+ current activation parameters | |||
τ n 0 | 1 | 0.05 | Ms |
τ n 1 | 100 | 0.27 | Ms |
θ n τ | −80 | −40 | |
σ n τ | −26 | −12 | |
φ n | 0.75 | 0.1 | |
θ n | −32 | −50 | |
σ n | 8 | 14 | |
Na+ current (in) activation parameters | |||
τ h 0 | 1 | 0.05 | Ms |
τ h 1 | 500 | 0.27 | Ms |
θ h τ | −57 | −40 | |
σ h τ | −3 | −12 | |
φ h | 0.75 | 0.05 | |
θ h | −39 | −58 | |
σ h | −3.1 | −12 | |
θ m | −30 | −37 | |
σ m | 15 | 10 | |
Ca2+ currents (in) activation parameters | |||
τ r 0 | 40 | 30 | Ms |
τ r 1 | 17.5 | 0 | Ms |
θ r τ | 68 | – | |
σ r τ | −2.2 | – | |
φ r | 0.2 | 1 | |
θ r | −67 | −70 | |
σ r | −2 | −2 | |
θ a | −63 | −57 | |
σ a | 7.8 | 2 | |
θ b | 0.4 | – | |
σ b | −0.1 | – | |
θ s | −39 | −35 | |
σ s | 8 | 2 | |
Other parameters | |||
K 1 | 15 | 30 | |
k Ca | 22.5 | 15 | |
ε | 3.75×10−5 | 1×10−4 | ms−1 |
V G→S | −85 | – | mV |
V F→S | 0 | – | mV |
V S→G | – | 0 | mV |
V F→G | – | −85 | mV |
θ g H | −39 | −57 | |
σ g H | 8 | 2 | |
θ g | 30 | 20 | |
α | 5 | 2 | ms−1 |
β | 1 | 0.08 | ms−1 |