Figure 6: The experimental design for a cell preferring upward motion.

In a given trial one pair of RDPs was placed inside a neuron’s RF (dashed ellipse) and one pair outside the RF. One of each pair (in- and outside RF) moved in the preferred direction (preferred pattern) of the neuron and the other in the anti-preferred direction (anti-preferred pattern). An anti-preferred pattern was the target in both attentional conditions (inside and outside). From left to right, the coherence of the preferred pattern was systematically decreased to determine the coherence-response function in the two attentional conditions.