. 2012 Jan 16;59(2-5):1261–1274. doi: 10.1016/j.neuroimage.2011.08.020

Table 1.

Prior expectations of model parameters.

Parameter	Physiological interpretation	Prior mean: P
m_e, m_i	Maximum postsynaptic depolarization	8, 32 (mV)^a
κ_e, κ_i	Postsynaptic time constants	1/4, 1/28 (ms⁻¹)^a
α₁₃, α₂₃, α₃₁, α₃₂	Amplitude of intrinsic connectivity kernels	2000, 8000, 2000, 1000
c_ij	Intrinsic connectivity decay constant	0.32 (mm⁻¹)^b
r, η, g	Sigmoid parameters (post synaptic firing rate function)	0.54, 0, 0.135^a
s_ij	Conduction velocity	3 m/s^b
$ℓ$	Radius of cortical source	50 (mm)^b

In practice, these priors are scaled by log-scale parameters with a prior mean of zero (and precisions of sixteen) to ensure positivity.