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Carnegie Mellon Robotics Institute

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Abstract

Describes preliminary work in the use of a virtual environment to derive just noticeable differences (JNDs) for force. Specifically, we look for thresholds of force sensitivity so that we may ultimately construct therapeutic force feedback distortions that stay below these thresholds. Initially, we have concentrated on JNDs as they are applied to the index finger; preliminary data in healthy individuals shows an average JND of approximately 10%. More significantly, the data indicate that visual feedback distortions in a virtual environment can be created to encourage increased force productions by up to 10%, and that this can be done without a patient's awareness.

Notes

Associated Lab(s) / Group(s): Neurobotics Laboratory

Associated Project(s): Feedback Distortion for Rehabilitation

Text Reference

Sonya Allin, Yoky Matsuoka, and Roberta Klatzky, "Measuring Just Noticeable Differences For Haptic Force Feedback: A Tool for Rehabilitation," Proceedings of the 10th IEEE Symposium on Haptic Interfaces for Virtual and Teleoperator Systems (HAPTICS 2002), March, 2002, pp. 299 - 302.

BibTeX Reference

@inproceedings{Allin_2002_3944,
   author = "Sonya Allin and Yoky Matsuoka and Roberta Klatzky",
   title = "Measuring Just Noticeable Differences For Haptic Force Feedback: A Tool for Rehabilitation",
   booktitle = "Proceedings of the 10th IEEE Symposium on Haptic Interfaces for Virtual and Teleoperator Systems (HAPTICS 2002)",
   pages = "299 - 302",
   month = "March",
   year = "2002",
}

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