Accuracy Comparison. Means and standard errors of accuracies across all subjects, separated by motor imagery and tactor location. The dotted line indicates the success rate expected through random chance (15%). For Low cues (which required left hand motor imagery), mean accuracy was statistically significantly higher with vibratory stimulus on the left arm (p = 0.031). For High cues (which required right hand motor imagery), mean accuracy was higher with the stimulus on the right arm.
Chatterjee et al. Journal of NeuroEngineering and Rehabilitation 2007 4:40 doi:10.1186/1743-0003-4-40