Herbal Extracts That Reduce Ocular Oxidative Stress May Enhance Attentive Performance in Humans

Figure 4

Within-group comparisons of two target ERPs on the control and experimental group. We used the cluster as a feature extraction filter introduced in the method section. (a)–(g) We plotted results of significant clusters (). For each cluster, we showed a grand averaged bar graph, a value topography, and two target ERPs over subject from control or experimental group. Bar graphs show quantified attention effect (alerting, orienting, and conflict). Topography shows significant values (FDR corrected) and discriminative area between extracted spatial features of two conditions. Small black dots mean channel location and red dots are the most discriminative channel location (the smallest value). Lastly, cyan-colored areas show the range of the significant cluster in the ERPs from the red dotted channel in the topography. We could not find any significant cluster or effect from the alerting condition in the control group.