Figure 12.

Oscillations are present only when a task-relevant object is in the response field. Here we analyze neurons in the cued attention task that were excluded from previous analyses because neither choice target was in the response field. Responses are aligned to onset of the cue, and the averages are combined data from Monkeys Dm and Np. A, Average firing rate of neurons with the cue overlapping the response field. ${\overline{P}}_{\text{post}}^{12:20}$ is greater than ${\overline{P}}_{\text{pre}}^{12:20}$ (p < 0.01). B, Average firing rate of neurons with no visual stimuli in the response field. There is no detectable increase in oscillation strength from ${\overline{P}}_{\text{pre}}^{12:20}$ to ${\overline{P}}_{\text{post}}^{12:20}$ (p = 0.37).