Figure 2.

Reaction times and saccadic eye movements. a, Reaction times (mean ± SEM) during behavioral control revealed that subjects needed more time to process high selection cues and when updating the cued location. However, there was no interaction effect between selection and updating, indicating that demands on selection and updating were manipulated independently. b, The rate of saccades during the cue presentation did not differ between experimental conditions. There were no significant differences which may have arisen from manipulations of selection and updating demands. In a separate baseline fixation session (Fix) without any demands on memory operations, participants produced a comparable number of eye movements as reflected by the overall saccade rate.