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ISSN: 1939-1412
Marco D'Alonzo , Scuola Superiore Sant'Anna, Pontedera
Strahinja Dosen , University Medical Center Göttingen, Georg-August University Göttingen, Göttingen
Christian Cipriani , Scuola Superiore Sant'Anna, Pontedera
Dario Farina , University Medical Center Göttingen, Georg-August University Göttingen, Göttingen
An important reason for the abandonment of commercial actuated hand prostheses by the users is the lack of sensory feedback. In a recent research we have presented a novel approach comprising hybrid vibro-electrotactile (HyVE) combined stimulation, in order to provide multi-modal sensory feedback. An important advantage of this approach is in the size of the design: the HyVE interface is much more compact than two separated single-modality interfaces. The HyVE approach has never been assessed as a method to provide multi-channel stimuli, i.e., stimuli from a variety of stimulators, mapping information from a multitude of sensors on a prosthesis. In this study, the ability of ten healthy subjects to discriminate stimuli and patterns of stimuli from four five-channel interfaces applied on their forearms was evaluated. We showed that multiple HyVE units could be used to provide multi-channel sensory information with equivalent performance (~ 95% for single stimuli and ~ 80% for pattern) to single modality interfaces (vibro- or electro-tactile) larger in size and with better performance than vibrotactile interfaces (i.e., 73% for single stimuli and 69% for pattern) with the same size. These results are promising in relation to the current availability of multi-functional prostheses with multiple sensors.
Integrating touch-based interactions into various domains Assistive technology, Haptics, Haptics Technology, Haptics Applications

M. D'Alonzo, S. Dosen, C. Cipriani and D. Farina, "HyVE - Hybrid Vibro-Electrotactile Stimulation - is an Efficient Approach to Multi-Channel Sensory Feedback," in IEEE Transactions on Haptics.
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