Extended Data Figure 2: Changes in success rate and acquisition time during perturbation blocks.
In Fig. 2d, we quantified the amount of learning in each session using a single metric that combined improvements in success rate and acquisition time. Here, we consider each metric separately. In each comparison, better performance is to the right. a, Change in success rate from the first 50-trial bin in the perturbation block to the bin with the best performance. The change in success rate was significantly greater for within-manifold perturbations than for outside-manifold perturbations for monkey J (top, P < 10−3, t-test). For monkey L (bottom), the change in success rate was greater for within-manifold perturbations than for outside-manifold perturbations, and the difference approached significance (P = 0.088, t-test). b, Change in acquisition time from the first 50-trial bin in the perturbation block to the bin with the best performance. For both monkeys, the change in acquisition time for within-manifold perturbations was significantly greater than for outside-manifold perturbations (monkey J (top), P < 10−4, t-test; monkey L (bottom), P = 0.0014, t-test). Note that a negative acquisition time change indicates performance improvement (that is, targets were acquired faster). Number of within-manifold perturbations, n = 28 (monkey J), 14 (monkey L); outside-manifold perturbations, n = 39 (monkey J), 15 (monkey L).
