Learning curves of CTL and AC subjects learning rotation in the dual-control conditions.
Filled circles (black trace) show the adjusted directional error (φ ), averaged within each cycle (1 cycle = 3 trials) and across all subjects in group III (CTL), vs. cycle number in the OB+ROT condition. This is the same trace as shown in Fig. 4 (filled circles in that figure). Open squares (grey trace): same information, but for subjects in group IV (AC). The first three cycles were performed without rotation. On cycle 4 a 30° CCW rotation was imposed for the remainder of the session (black arrow).