Fig. 2.

Attention network test schematic showing the timing and different conditions for each trial. A trial begins by presenting one of three cue conditions for 200 ms (no cue, center cue, spatial cue). A variable delay period of 300 to 11,800 ms elapses before one of two target conditions is presented (congruent, incongruent). The target disappears after 2000 ms, or when a response button is pressed. From the moment the target appears the trial continues for a variable delay period of 3000 to 15,000 ms.