Fig. 4: Personal closeness processing and social layer preference in different cortical networks.

A Personal closeness processing with respect to the DMN subsystems. Voxels which were significantly more active during the social task (regardless of social layer) compared to a lexical control task (FDR-corrected p < 0.01 at the voxel level) are colored. DMN subsystems are shown in greyscale outlines. B Left: Overlap between the seven cortical networks and clusters implicated in personal closeness processing (depicted in A). Only the DMN was significantly implicated in the social task. Right: Overlap between cortical networks and social layer sensitive clusters (depicted in D). The DMN showed the largest overlap with social layer sensitive clusters. C Distribution of social layers within subsystems of the DMN (Core, dorsal medial (DM) and medial temporal (MT)^36,37). Percentages indicate the proportion of each subsystem showing preference for each social layer. D Cortical distribution of social layers with respect to DMN subsystems. Social layer sensitive clusters are identified and colored as in Fig. 2. DMN subsystems are shown in greyscale outlines. Layer 1 was dominant in DMN-Core and DMN-DM, while layers 4–5 were dominant in DMN-MT. *p < 0.05.