Figure 5.

Brain regions showing parametric responses to social content. a, b, Colored parcels show mean differences (FDR q < 0.05) in slope regression coefficients (“Social”–“Unsure” and “Unsure”–“Non-social”) within the robust social perception regions (compare black contours in Fig. 3). c, Black contours and the dark red regions in c highlight the 35 parcels that showed a graded response to perceived socialness (“Social” greater than “Unsure” greater than “Non-social” or vice versa; in other words, the intersection of a and b). d, Time courses for the most ambiguous animation (RANDOM MECH) in a subset of 10 of the parcels from a, confirming that activity associated with “Unsure” percepts is intermediate to “Non-social” percepts even when controlling for visual input.