@inproceedings{boerner:whc2015, editor = {IEEE}, author = {H. Börner and S. Endo and A. Frisoli and S. Hirche}, title = {Effects of Vibrotactile Feedback on Human Control Performance in a Dynamical Stabilization Task}, booktitle = {IEEE World Haptics Conference (WHC)}, year = {2015}, pages = {415-420}, language = {en}, abstract = {While research has demonstrated how vibrotactile devices can be effectively used to guide human behavior, efficient mappings of vibration patterns for spatial guidance in time-critical dynamical tasks have not yet been understood. In this paper, we contrast two types of action-dependent, haptic stimulus designs to demonstrate the different effects of vibrotactile feedback on the human control performance. A wireless bracelet is used to provide patterns of vibrotactile stimuli in real-time, representing either optimal hand velocity or acceleration for the stabilization of an inverted pendulum. The optimal control behavior is supplied by a linear quadratic regulator. The analyses of the participants' stabilization and learning behavior revealed a significant improvement caused by the additional velocity-dependent feedback. The results are consistent with previous research, which indicates that the human sensory-motor system is generally more sensitive to velocity than acceleration information. In summary, the present paper suggests how human-centric vibrotactile stimuli should be designed and how they can be effectively transmitted to the human user for time-critical behavioral guidance.}, keywords = {boerner_pub;haptics_endo;conhumo}, }