Table 2.

Parameter values for the dimensionless SPDEs neural macrocolumn model. (The dimensionless symbols (first column) are defined in terms of the dimensional variables (second column) found in table 1 of Steyn-Ross et al. (2003). The variables are described in the third column and typical values are shown in the fourth column.)

symbol	definition	description	typical value
e, i		(as subscript) excitatory, inhibitory cell populations
Γe,i	$G_{\text{e},\text{i}}\text{exp}(1)S^{\text{max}}/{\gamma }_{\text{e},\text{i}}|h_{\text{e},\text{i}}^{\text{rev}}-h^{\text{rest}}|$	influence of input on the mean soma membrane values	1.42×10−3, 0.0774
$h_{\text{e},\text{i}}^0$	$h_{\text{e},\text{i}}^{\text{rev}}/h^{\text{rest}}$	dimensionless cell reversal potential	−0.643, 1.29
Te,i	τγe,i	dimensionless neurotransmitter rate constant	12.0, 2.6
λe,i	$\tau \tilde{v}{\mathrm{\Lambda }}_{\text{ee},\text{ei}}$	dimensionless characteristic corticocortical inverse-length scale	11.2, 18.2
Pee,ie	pee,ie/Smax	subcortical input to e population	11.0, 16.0
Pei,ii	pei,ii/Smax	subcortical input to i population	16.0, 11.0
$N_{\text{e},\text{i}}^{\alpha }$	—	total number of synaptic connections from distant e populations	4000, 2000
$N_{\text{e},\text{i}}^{\beta }$	—	total number of local e and i synaptic connections	3034, 536
${\tilde{g}}_{\text{e},\text{i}}$	ge,i/hrest	dimensionless sigmoid slope at inflection point	−19.6, −9.8
${\tilde{\theta }}_{\text{e},\text{i}}$	θe,i/hrest	dimensionless inflection point for sigmoid function	0.857, 0.857