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. Author manuscript; available in PMC: 2013 Sep 13.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2012;2012:1327–1330. doi: 10.1109/EMBC.2012.6346182

Fig. 3.

Fig. 3

Internal model adaptation. (A) The first perturbation trial from an RP experiment. The B2-decoded cursor trajectory (black line) was displayed to the subject online. B1-decoded “whiskers” (red lines) were not displayed to the subject. (B) Aiming errors assessed at a single timestep from the trial in (A). Using B1 as the forward model, the red whisker achieves zero error. Using B2 as the forward model, the cursor would have missed the target by 51°. (C) Average angular aiming errors under B1 and B2. Angular errors for B1 and B2 were computed using the last segment of each whisker, as in (B). Angular errors were averaged within a trial, then averaged in non-overlapping blocks of 16 trials and across 20 RP experiments. Trial numbers correspond to the last trial included when averaging across trials. Shaded regions indicate +/− SEM (n = 320).