Priors Engaged in Long-Latency Responses to Mechanical Perturbations Suggest a Rapid Update in State Estimation
Figure 8
Effect of muscle pre-activation.
A: Changes in reversal times relative to the average across all step responses from the block condition (similar as in Figure 4 C). Black and gray illustrate catch and block conditions while round and square items correspond to ramp-down and step responses, respectively. B: Response evoked by ramp-down perturbation when these profiles are expected (black) or presented as catch trials (gray). Data are from Brachioradialis and the trace is the average across subjects. Stars indicate that the response averaged in the corresponding time window differed significantly across catch and block conditions (P<0.05). C: Same as B for the responses following step perturbations (2 Nm).