Figure 1.

The procedure of attention network test with pure block design. The baseline, alerting, orienting, and executive control conditions were arranged in separated blocks. There was only one condition in each block. Each trial started with a cue (the alerting condition) or a fixation lasting for 100 ms. After a 300 ms interval, the target was presented for 2000 ms or disappeared after one key was pressed. After that a fixation was presented until the end of that trial. Each trial lasted for 10 s (0.1 Hz). RT: reaction time.