Fig. 5.

Display of the spatial memory task used in this study. The spatial memory task load was parametrically manipulated between one, two, or three items (two-item condition shown here). Participants were asked to remember the locations of one, two, or three black dots. After a brief delay, a red dot appeared, and participants were asked to respond whether the location of the red dot matched or did not match one of the locations of the previously shown black dots. This task was administered to all participants at baseline, after 6 mo, and again after completion of the intervention.