Fig. 2From: The association between visual attention and body movement-controlled video games, balance and mobility in older adultsThe dynamic useful field of view (UFV-D), showing the stimulus screen with the central target (smiling or frowning face). The target is one of the peripheral circles which moves up and down during the presentation time (200 ms). The inset illustrates the movement. The light grey circle represents the maximum extent of movement away from its initial position, shown by the white circleBack to article page