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Table 1 Symbol definitions for the cortical model

From: Simulations of pattern dynamics for reaction-diffusion systems via SIMULINK

Symbols Description Value Unit
Λ e,b Inverse-length scale for eb axonal connection 4 cm-1
v Axonal conduction speed 140 cm s-1
Q e , i max Maximum firing rate 30, 60 s-1
θ e,i Sigmoid threshold voltage -58.5, -58.5 mV
σ e,i Standard deviation for threshold 3, 5 mV
C Constant π/ 3  
N eb α Long-range e → b axonal connectivity 2000 -
N eb , ib β Local e → b, i → b axonal connectivity 800, 600 -
γ e Excitatory rate-constant 170 s-1
γ i Inhibitory rate-constant 50 s-1
ϕ eb sc eb tonic flux entering from subcortex 300 s-1
τ e,i Neuron time constant 0.04, 0.04 s
V e , i rev Reversal potential at dendrite 0, -70 mV
V e , i rest Neuron resting potential -64, -64 mV
Δ V e , i rest Offset to resting potential 1.5, 0 mV
ρ e Excitatory synaptic gain 1.00×10-3 mV s
ρ i Inhibitory synaptic gain -1.05×10-3 mV s
D 2 i ↔ i gap-junction diffusive coupling strength 0–2.0 cm2
D 1 e ↔ e gap-junction diffusive coupling strength D 2/100 cm2