Framewise displacement (FD) across age groups. The figure shows framewise displacement (FD) across age groups (Younger Adults in teal, and Older Adults in orange) while performing the Bimanual Tracking Task (BTT). The “X” indicates mean FD for each age group. A significant main effect of AGE GROUP was observed (the corresponding F-value and p-value are reported), with older adults presenting overall more framewise displacement compared to younger adults. Individual data points reflect mean FD per subject, pooled across task conditions. Significance level: *** p < 0.001.