Commercially available hand prostheses allow the person to grab most of everyday objects. But this only involves the actions directed at the prosthesis, while interaction with the object would require a sense of perception as well. Would it be possible to create this perceptive sense? And would it be possible to discriminate qualities of the object itself, like the hardness and the size?
In the Sensible Sense project the perceptive sense in multi-digit prostheses is explored. Sensors on the hand
provide data input which is expressed by a vibrotactile display on the residual limb. The system is integrated in a real prosthesis with collaboration of Livit Orthopedie. Through multiple iterations we explored different tactile patterns. The result is a setup which allows the person to perceive movement of the fingers, the amount of fingers making contact with the object and the intensity of the grip.
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