Learning Effect on Wrist Guidance Using Multiple Vibrotactile Cues

Abstract

In this paper, we present a paradigm to improve the followability on a path-following task for the wrist by practicing repeatedly using vibrotactile cues. Vibrotactile cues were provided as a direction to modify the wrist’s path when the wrist’s position deviates from the desired path. The experiment was conducted to test the learning effect of the vibrotactile feedback on a participants’ wrist motion during three days. We found that the root mean squared error of the participants wrist’s trajectory decreased when provided with vibrotactile feedback. Additionally, most participants could reproduce the desired path in a more accurate way after removing the feedback immediately after training. This effect continued slightly over three days and the performance gradually improved after training.