Figure 4.
Procedures and reaching performance of experiment no. 3. (a) Overview of the practice (left panel) and practice-preceded sessions (right panel). The sessions were identical to those of the previous experiments, with the exception that no visual deviation was introduced in the practice session to cause the accumulation of fatigue without concurrent learning. These sessions were separated by a 2 min ISI. (b) Overview of the single session. This session is also identical to those used in previous experiments. (c) Left panel: hand direction at PV for the three sessions. Right panel: averaged hand direction at PV, shown separately for each phase of each session. Breakdown of a two-way interaction revealed that neither acquisition nor retention differed between the practice-preceded and single sessions (both Cohen's dz < 0.140; negligible effect sizes). For (c), error bars represent within-subject 95% CIs. Asterisks (*) indicate significant differences (p < 0.05). (Online version in colour.)