Figure 1 .

SI computational neural model. (A) Model 3D pyramidal geometry shown approximately to scale. (B) Reduced circuit schematic, with somata indicated in darker brown. Maximal conductances for each synaptic site are given in multiples of 10⁻⁵ nS/cm². Red arrows indicate the source of the primary current dipole calculated from the intracellular current flow in the pyramidal neuron dendrites. The units of measure of this signal are directly comparable with MEG data (Am). (C) (i) Schematic of lateral connections between pyramidal cells with synaptic weights labeled; (ii) schematic of lateral connections among interneurons.