Fig. 2

Group differences in heartbeat evoked potentials (HEPs) by condition. Panel a shows that the AN group had significantly higher HEPs than the control group and that HEPs were significantly more positive during the heartbeat counting task than during rest. Panel b shows non-significant effects on the ECG (control analysis). Panel c shows HEP waveforms, averaged across conditions and electrodes of the fronto-central cluster, using an average reference. The groups are displayed as separate lines. The time-window of interest (455–595 ms) is highlighted by a grey rectangle and magnified in the inlay. Error bars in Panels A and B represent 95% CI. HCT = heartbeat counting task; HC = healthy control; AN = anorexia nervosa; BN = bulimia nervosa; BED = binge eating disorder; OB = obesity. * = post-hoc Bonferroni-corrected pairwise comparison significant at p <.05.