Fig. 4.

A. Topographical maps for the ERP difference between the two conditions, separately for different inflammation groups based on how many episodes they had elevated CRP level. The P400 component (positive) is most prominent in the occipital region, and the Nc component (negative) is most prominent in the central and frontal regions. The children with fewer episodes of elevated CRP (e.g., zero to once) showed greater P400 (more positive) and Nc (more negative) responses to the infrequent than frequent faces. B. Bar graphs showing the average amplitude difference across the entire P400/Nc time window as a function of how often the children had elevated CRP. Note: The Nc amplitude difference was calculated by subtracting the amplitude for the infrequent condition from that for the frequent condition, i.e., Frequent – Infrequent, and thus in both P400 and Nc graphs, a positive value mean greater response to infrequent faces. *p ​< ​.05, **p ​< ​.01. P-values for multiple comparisons were Bonferroni corrected.