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. 2009 May 20;29(20):6472–6478. doi: 10.1523/JNEUROSCI.3075-08.2009

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Copyright © 2009 Society for Neuroscience 0270-6474/09/296472-07$15.00/0

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Figure 5. — Evolution of within-trial adaptive control for random rotations in the second block of 2000 trials. A, Minimum distance to target in ±90° rotation trials averaged over batches of 200 trials for the group that had experienced unexpected rotation trials already in the previous 2000 trials. This group shows no improvement. Error bars show SD over all trials and subjects. B, Mean magnitude of the second velocity peak over batches of 200 trials for the rotation group. C, SD in the last 500 ms of movement for ±90° rotations computed over the same trial batches for the rotation group. There is no trend over consecutive batches. D, Minimum distance to target in ±90° rotation trials averaged over batches of 200 trials for the group that had experienced unexpected target jump trials in the previous 2000 trials. This group shows a clear improvement. E, Mean magnitude of the second velocity peak over batches of 200 trials for the target jump group. F, SD in the last 500 ms of movement for ±90° rotations computed over the same trial batches for the target jump group. The SD clearly decreases over consecutive batches.