Figure 4. Detailed view of Heschl's gyrus (HG), with the layout of the different auditory effects in the auditory cortex (AC) and the planum temporale (PT).

This shows that the blocked effect of surround sounds (in Exp 1) and time-varying effects of auditory intensity (in Exp 2) activated all TE sub-regions of AC plus the PT (in yellow and in violet). By contrast, the effect of auditory “complexity” activated the PT and only the most lateral part of AC (in yellow and in orange), without affecting area TE1.1. The broken lines show the borders between the TE sub-regions (TE1.0, TE1.1, and TE1.2) estimated using the SPM anatomy toolbox [82]. Activations are displayed on axial section (z = 2).