Figure 4.

Population activity in the grid conjunction search task. Mean ± SE normalized activity profile for all neurons aligned to the onset of fixation just before target acquisition for single-fixation (top) and multiple-fixation (bottom) trials. The target-related (solid) and distracter-related (dashed) activity of each neuron was normalized to its distracter-related activity in multiple-fixation trials at −100 ms before fixation onset. * indicates the time at which target- and distracter-related activity became significantly different (p < 0.05, t tests).