Altered Functional Connectivity in Children with ADHD Revealed by Scalp EEG: An ERP Study

Figure 1

Experimental protocol of the visual P3 tasks used in this study. In each trial, a 250 ms attention alert, a 500 ms preparation cue, a 500 ms stimulus presentation, and a 1000 ms break were included. The upward-oriented triangles and down-oriented triangles with a thin cross in the center denoted standard and target stimuli, respectively. Only standard or target stimulus appeared once in one trial.