Changes in angular oscillation of the board across the time course of learning.

<p>Amplitude (A) and variability (B) of angular oscillation of the board around the horizontal plane for any direction (first plot from the top), for AP and ML directions (second and third plot from the top) and around the vertical axis (most bottom plot). The error bars represent the standard errors. Abbreviations as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0142423#pone.0142423.g002" target="_blank">Fig 2</a>.