Table 1 General neural mass model parameters and their descriptions
Parameter | Description | Value (default) |
|---|---|---|
t | Sample time | 0.002 s |
P(t) | The pulse density of an input signal to the excitatory population | 550 spikes/s−1 |
Noise | Random fluctuations around average level of P(t) | 1.0 |
A he(t) | Amplitude of the EPSP | 1.6 mV |
A hi(t) | Amplitude of the IPSP | 32 mV |
a he(t) | Shape parameter of EPSP | 55 s−1 |
b he(t) | Shape parameter of EPSP | 605 s−1 |
a hi(t) | Shape parameter of IPSP | 27.5 s−1 |
b hi(t) | Shape parameter of IPSP | 55 s−1 |
g | Parameter of sigmoid function that relates membrane potential to impulse density | 25 s−1 |
q | Parameter of sigmoid function that relates membrane potential to impulse density | 0.34 mV−1 |
Vd1 | Threshold potential used in the sigmoid function that relates membrane potential to impulse density for main population of excitatory neurons | 7 mV |
Vd2 | Threshold potential used in sigmoid function that relates membrane potential to impulse density for inhibitory neurons | 7 mV |
C1 | Connection strength between main population of excitatory and inhibitory neurons | 32 |
C2 | Connection strength between inhibitory neurons and main population of excitatory neurons | 3 |
S | Coupling strength between neural masses (gain factor) | 1.5 |
T | Time delay for the coupling between neural masses | 0.002 s |
N | Number of neural masses (/nodes) in network model | 78 |