Average subject errors across different phases of the experiment. Error metrics decrease as training progresses. The horizontal line within each bar represents the average group performance over a 10 trial window. The top and bottom of bars represent the 25th and 75th percentiles. The control group is depicted in white, while the EA group is depicted in grey. Every coloured dot within the box represents a different subject. The first 10 trials for each subject are overlaid semitransparent. Horizontal lines and asterisks' are drawn to signify significance between and within phases.