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Table 1 Typical values established in the original JR-NMM [ 13 ] taken from [ 19 ]

From: A Stochastic Version of the Jansen and Rit Neural Mass Model: Analysis and Numerics

Parameter Description Typical value
A Average excitatory synaptic gain 3.25 mV
B Average inhibitory synaptic gain 22 mV
\(a^{-1}\) Time constant of excitatory postsynaptic potential 10 ms
\(b^{-1}\) Time constant of inhibitory postsynaptic potential 20 ms
C Average number of synapses between the populations 135
\(C_{1}\) Avg. no. of syn. established by principal neurons on excitatory interneurons C
\(C_{2}\) Avg. no. of syn. established by excitatory interneurons on principal neurons 0.8 C
\(C_{3}\) Avg. no. of syn. established by principal neurons on inhibitory interneurons 0.25 C
\(C_{4}\) Avg. no. of syn. established by inhibitory interneurons on principal neurons 0.25 C
\(\nu_{\max}\) Maximum firing rate of the neural populations (max. of sigmoid fct.) 5 s−1
\(v_{0}\) Value for which 50% of the maximum firing rate is attained 6 mV
r Slope of the sigmoid function at \(v_{0}\) 0.56 mV−1