Figure 10.

Hypothetical 2-step selection process that emerged during learning in the difficult condition. When the monkeys became proficient, the selection of the relevant icon initially suppressed the activity elicited by the adjacent target curve, because the animal first selected the relevant icon (yellow), which may have caused a suppressive zone (blue; Mexican hat profile) of attention. In the subsequent phase, V1 neurons select the target curve and FEF cells the correct target for an eye movement.