The FEF inactivation effect on the number of saccades per trial in the three-target memory task.

The values are the averages over five and six muscimol-injection experiments for M9 and M10, respectively. The first number in an arrowed pair is the saccade count before the inactivation and the second that during inactivation. Statistically significant differences between the two counts were marked by asterisks (*: p<0.05; **: p<0.01, by two-tailed paired t test). TDI: target discrimination index ( = on-target saccades/all saccades ×100).