Figure 1.

Schematic illustration of the experimental design. At the beginning of each block an arrow indicated which direction of motion had to be attended (left‐ or rightward motion). The dots remained stationary during the inter‐stimulus interval and at the beginning of each trial moved either left‐ or rightwards for 300 ms. There were three alternative coherence‐levels for both motion‐directions (100, 85, and 70%). On some trials, the dots moved with a higher velocity, and subjects responded to those in the attended direction as targets independent of the motion‐coherence of the dots.