Fig. 3.

Region of interest selection and DCM network structure. a) Five neuronal sources activated during the fMRI experiment, as identified using a mass univariate analysis. These were left and right Heschl’s gyrus (lHG, rHG), left and right planum temporale (lPT,rPT) and right inferior frontal gyrus (rIFG). Peak MNI coordinates, used as priors for MEG source localisation, are shown. b) Structure of the neuronal part of the DCM. Each large black circle is a canonical microcircuit (CMC), extrinsic connections between regions are shown as curved black lines, and connections that were subject to change – from one condition to another – are indicated with straight red lines.