Behavioural results.

<p>Trial durations across tasks and conditions. <b>A</b>. Trial duration measured in each task [dynamic balance (DB), motor imagery (MI) and visual imagery (VI)]; <b>B</b>. Trial duration measured for each trajectory lengths within each task [short (60% of subjects' maximal sway) and long (80% of subjects' maximal sway)]; <b>C</b>. Trial duration measured for each target size within each task [large (8 cm) and small (2 cm)], Data represent mean ± SEM; <b>D</b>. Average r2 of the correlation between trial duration and ID for each of the different tasks (post hoc comparison of r2 across the different tasks). Data represent mean ± SD; * indicates p<0.05.