Fig. 5

ERP waveforms illustrating P2 effects for cognitively able autistic and NT adults for target stimuli in a ROI comprising the following electrode sites: F1, F2, Fz, FC1, FC2, FC5, FC6, FCz, C3, C4, C5, C6, and Cz. A repeated measure ANOVA was performed for each group with the factors as follows: category (animal vs. food), typicality (typical vs. atypical), and presentation time (23.5 vs. 82.3 ms). The results reflect influences of category (food vs. animal) and typicality (typical vs. atypical). A ERPs. The time window used for the mean activity is illustrated by the gray bar over the x-axis (i.e., ms). In both groups, we observed effects of typicality and category, as indicated by the asterisk. In NT adults, we observed differences between animal (blue) vs. food (red) and typical (continuous) vs. atypical (dotted) images. B Topographical maps. Electrode sites are marked with circles, filled circle indicates the ROI for this analysis. In cognitively able autistic adults, we observed a difference between atypical animal vs. atypical food images, but not between typical animal vs. typical food images