Figure 5.

Unassisted tracking performance for the elbow as a function of session, for each participant and unassisted task. Panel a) shows tracking performance for the centre-distal task; Panel b) shows tracking performance for the off-centre-middle task; Panel c) shows tracking performance for the far middle task; Panel d) shows tracking performance for the far distal task. 1= perfect tracking performance. Best-fitting regression slopes were calculated for each combination of participant, muscle and task, with mean slopes (across participants) shown