Figure 8.

Exploratory analyses revealed that the connectivity between the amygdala and specific regions within the networks supporting social perception and affiliation are the best predictors of social network size. a, Brain images show location of voxels within the medial and ventrolateral amygdala's intrinsic connectivity networks (defined in the discovery sample) that correlated with social network size at p < 0.01 in the brain-behavior sample, uncorrected with a cluster size constraint of 10 voxels. Color bars indicate the p values (10⁻²–10⁻⁴) of correlated voxels, which are overlaid on slices of a T1 MNI152 0.5 mm template brain in radiologic convention. b, Scatter plots show the effects for peak voxels with the strength of intrinsic connectivity on the y-axis and social network size on the x-axis; **p < 0.001.