Velocity Profiles.

<p>All plots show the average velocity profile across all 8 trials. Every point represents the mean instantaneous velocity per timestep with the error bars showing the standard deviation of velocity across the trials. The x-axes show the timesteps from 1 to 50, representing 10ms per timestep and y-axes show the velocity ranging from 0–300 degrees per second. The columns show the data from the four models with the sensory input weight scale factor (<i>f</i>) set to +2 for Vision and -4 for Proprioception (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0134669#pone.0134669.e001" target="_blank">Eq 1</a>; <i>f</i> parameter) representing vector subtraction of the sensory inputs. a) The champion agents’ average velocity profile for the VG task. b) The average velocity profile for all 100 independently evolved best agents (including the champion agent) for the VG task. c) The champion agents’ average velocity profile for the MG task. d) The population averaged velocity profile for all 100 independently evolved best agents (including the champion agent) for the MG task. The LAT and FBLAT models (columns 3 and 4) generated smooth velocity profiles, while the FF and FB models (columns 1 and 2) tended to produce double humped profiles (also see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0134669#pone.0134669.s004" target="_blank">S3</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0134669#pone.0134669.s005" target="_blank">S4</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0134669#pone.0134669.s007" target="_blank">S6</a> Figs).