Table 1.

Dimensionless variables and parameters of the SPDE cortical model

Symbol	Description	Typical value
	Spatially averaged soma potential for neuron populations	–
	Postsynaptic activation due to excitatory inputs	–
	Postsynaptic activation due to inhibitory inputs	–
	Long-range (corticocortical) input to e and i populations	–
	Time (dimensionless)	–
	Space (dimensionless)	–
Γe,i	Influence of synaptic input on mean soma potential	4.6875 × 10 − 4, 0.0105
	Reversal potential	0, 1.0938
T e,i	Neurotransmitter rate constant	12.0, 3.6
λ e,i	Inverse length scale for corticocortical connections	11.2, 11.2
P ee,ei	Subcortical input from excitatory population	25.0, 25.0
P ie,ii	Subcortical input from inhibitory population	25.0, 25.0
	Number of distant (corticocortical) connections from excitatory populations to e and i populations	3710, 3710
	Number of local synaptic connections from e and i populations	410, 800
	Slope at inflection point of sigmoid function	− 29.021,  − 19.347
	Inflection point for sigmoid function	0.91406, 0.91406

Values for the dimensional parameters were taken from Wilson et al. (2006), with the exception of γ _i which was chosen to be 90 s ^− 1. The dimensionless parameters were then calculated as described in Kramer et al. (2007)