Figure 6

Examples of hand position during tracking under the Normal, Delay and Mechanical conditions. Each raw represents the hand position of one participant from each group. The left column represents the first trial under the Normal condition (green line). The middle column represents the first trial (trial 4) under the Delay (groups 1 and 3, red line) or the Mechanical (groups 2 and 4, blue line) conditions while the right column represent the last trial under the same condition (trial 19 for groups 1 and 2 and trial 11 for groups 3 and 4). Horizontal dashed black lines represent the amplitude of target movement. The examples of participants from groups 2 and 4 suggest that participants increased their hand movement amplitude during adaptation to the Mechanical condition compared to the Normal and Delay conditions.