Figure 4.

Proceedings of unanticipated jump-landings and the clarification when and how the visual stimulus indicating the side on which the single leg landing has to be performed is presented. C=slide with a fixation cross (same as in A; figure 3); D=USB button (4, figure 2) release during take-off (plastic panel elevates) initiating slide change; E=slide indicating the landing foot presented only after take-off. Participants start standing in bipedal position on the plastic panel (3; figure 2) while fixating the cross (C). The experimenter mentions the jump-landing condition ‘unanticipated’. Afterwards, participants will initiate the jump by their own while C is still shown. The slide indicating the landing leg (E) appears about 120 msec after take-off (button release; D) and is than shown continuously (for more details, refer to the online supplementary video file).