Fig. (1) Inter-subject correlations of brain activity during free viewing of the movie clip. A: The across-subjects averaged inter-subject correlation coefficients plotted on sagittal, coronal and axial T1-weighted anatomical scans of a single subject showing the widespread correlations in both cortical and subcortical structures. The green arrow indicates the position of the amygdala. B: The inter-subject voxelwise correlations visualized on the inflated left and right hemisphere cortical surfaces. Note the robust activations in prefrontal and orbitofrontal areas, as well as in the cingulate gyrus during viewing of the movie, and the stronger intersubject correlations in the right than left hemisphere frontal areas.