Initial acceleration as a function of step amplitude.

<p>a) Mean slope of the initial response by monkey and step amplitude. The slope of the response corresponds to the initial acceleration of the monkey's turn (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0011975#s2" target="_blank">Methods</a>). Error bars represent the standard error of the mean. b) Distribution of slopes for monkey F by step amplitude. Similar results were found for monkeys J and M.