FIGURE 1.

Schematic of the visuospatial ANT (ANT-VS). In this task participants made responses to indicate the direction of a central arrow (left or right) which was surrounded by two flanker arrows on each side pointing either to the same direction as the target (congruent condition) or to the opposite direction (incongruent condition). Before the target appeared, a cue in the form of a box flashing on one or both sides was displayed. The cue could be valid, which predicted the target position correctly, or invalid, which predicted the opposite position. Also, there was a double cue condition, in which both boxes flashed, to provide temporal but not spatial information, and in the no cue condition no cue was presented.