Extended Data Fig. 9. Masks and ROIs.

(a) Spherical (5 mm diameter) OFC ROI used for timecourse analysis of experiment 1 (Fig.2f,g,h, Extended Data Fig.2e,f,g,h,i top row), centred on the peak of the activation for GLM1, reported in Fig.2e, with a leave-one-out procedure. (b) Spherical (5 mm diameter) MFC ROI used for experiment 1 timecourse analysis and repetition suppression analysis (Fig.2l,m,n, Extended Data Fig.2e,f,g,h,i bottom row, Extended Data Fig.4c), centred on the peak of the activation for GLM2, reported in Fig.2i, with a leave-one-out procedure. (c) Spherical (5 mm diameter) aOFC ROI used for further repetition suppression analyses (Extended Data Fig.4b), centred on the peak of the activation for GLM3, reported in Fig.3e, with a leave-one-out procedure. (d) Frontal cortex mask used in the repetition suppression analysis (Fig.3e) defined as cortical gray matter anterior to y=4.5 and expanded by one voxel. (e) 3x3x3 voxel OFC ROI defined in acquisition space for the grid-code signature analysis (Extended Data Fig.4h), centred on the peak of the activation for GLM1. (f) 3x3x3 voxel MFC ROI defined in acquisition space for the grid-code signature analysis (Fig.3g,h,i), centred on the peak of the activation for GLM2. The locations in panels e-f are the same as in panels a-b and are therefore independent with respect to experiment 2. The only difference is that the ROIs in panels e-f are defined in acquisition space. (g) 3x3x3 voxel entorhinal cortex ROI used for grid-code signature analysis (Extended Data Fig.4i) defined a priori.