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Testing silicone digit extensions as a way to suppress natural sensation to evaluate supplementary tactile feedback

Engels, L. F.; Cappello, L.; Fischer, A. 1; Cipriani, C.
1 Institut für Technik der Informationsverarbeitung (ITIV), Karlsruher Institut für Technologie (KIT)


Dexterous use of the hands depends critically on sensory feedback, so it is generally agreed that functional supplementary feedback would greatly improve the use of hand prostheses. Much research still focuses on improving non-invasive feedback that could potentially become available to all prosthesis users. However, few studies on supplementary tactile feedback for hand prostheses demonstrated a functional benefit. We suggest that confounding factors impede accurate assessment of feedback, e.g., testing non-amputee participants that inevitably focus intently on learning EMG control, the EMG’s susceptibility to noise and delays, and the limited dexterity of hand prostheses. In an attempt to assess the effect of feedback free from these constraints, we used silicone digit extensions to suppress natural tactile feedback from the fingertips and thus used the tactile feedback-deprived human hand as an approximation of an ideal feed-forward tool. Our non-amputee participants wore the extensions and performed a simple pick-and-lift task with known weight, followed by a more difficult pick-and-lift task with changing weight. They then repeated these tasks with one of three kinds of audio feedback. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000137578
Veröffentlicht am 24.09.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technik der Informationsverarbeitung (ITIV)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1932-6203
KITopen-ID: 1000137578
Erschienen in PLoS ONE
Verlag Public Library of Science (PLoS)
Band 16
Heft 9 September
Seiten Art.-Nr.: e0256753
Vorab online veröffentlicht am 01.09.2021
Nachgewiesen in Web of Science
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