Research output per year
Research output per year
Jian Dong*, Bo Geng, Imran Khan Niazi, Imran Amjad, Strahinja Dosen, Winnie Jensen, Ernest Nlandu Kamavuako
Research output: Contribution to journal › Journal article › Research › peer-review
Electrotactile stimulation has been suggested as a modality for providing sensory feedback in upper limb prostheses. This study investigates the multiday variability of subdermal and surface stimulation. Electrical stimulation was delivered using either surface or fine wire electrodes placed right under the skin in eight amputees for seven consecutive days. The variability of psychophysical measurements, including detection threshold (DT), pain threshold (PT), dynamic range (DR), just noticeable difference (JND), Weber fraction (WF) and quality of evoked sensations, was evaluated using the coefficient of variation (CoV). In addition, the systematic change in the mean of the parameters across days was assessed in both stimulation modalities. In the case of DT, PT, DR, and perceived intensity at 100 Hz, the CoV of surface stimulation was significantly smaller than that of subdermal stimulation. Only PT showed a significant systematic change in the mean value across days for both modalities. The outcome of this study has implications for the choice of modality in delivering sensory feedback, though the significance of the quantified variability needs to be evaluated using usability tests with user feedback.
Original language | English |
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Article number | 8918067 |
Journal | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
Volume | 28 |
Issue number | 1 |
Pages (from-to) | 174-180 |
Number of pages | 7 |
ISSN | 1534-4320 |
DOIs | |
Publication status | Published - Jan 2020 |
Research output: PhD thesis