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This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous.

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Presentation on theme: "This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous."— Presentation transcript:

1 This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects. J Rehabil Res Dev. 2012; 49(2):297–308. http://dx.doi.org/10.1682/JRRD.2010.09.0187 Slideshow Project DOI:10.1682/JRRD.2010.09.0187JSP Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects Bo Geng, MSc; Ken Yoshida, PhD; Laura Petrini, PhD; Winnie Jensen, PhD

2 This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects. J Rehabil Res Dev. 2012; 49(2):297–308. http://dx.doi.org/10.1682/JRRD.2010.09.0187 Slideshow Project DOI:10.1682/JRRD.2010.09.0187JSP Aim – Assess effect of specific stimulation parameters on sensations evoked by single- or dual-channel electrocutaneous stimulation. Relevance – Incorporating sensory feedback system in advanced hand prostheses may overcome difficulties and improve their usefulness. – Few studies are available on sensations artificially created by dual-channel electrocutaneous stimulation.

3 This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects. J Rehabil Res Dev. 2012; 49(2):297–308. http://dx.doi.org/10.1682/JRRD.2010.09.0187 Slideshow Project DOI:10.1682/JRRD.2010.09.0187JSP Methods Immediately after stimulus was applied to their forearm skin, 16 nondisabled subjects evaluated perceived sensation: – Modality, location, quality: Psychophysical questionnaire with predefined word list. – Magnitude: 0 to 10 visual analog scale. Experimental setup.

4 This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects. J Rehabil Res Dev. 2012; 49(2):297–308. http://dx.doi.org/10.1682/JRRD.2010.09.0187 Slideshow Project DOI:10.1682/JRRD.2010.09.0187JSP Results Heat map of sensation modality, location, and quality. Colors encode number of subjects reporting specific sensation (x-axis). Warmer color (red) indicates more subjects chose word, while cooler color (blue) indicates fewer subjects. Four blocks each correspond to 1 of 4 types of stimulation (y-axis, left) comprising 48 stimulation parameter combinations in total (y-axis, right).

5 This article and any supplementary material should be cited as follows: Geng B, Yoshida K, Petrini L, Jensen W. Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects. J Rehabil Res Dev. 2012; 49(2):297–308. http://dx.doi.org/10.1682/JRRD.2010.09.0187 Slideshow Project DOI:10.1682/JRRD.2010.09.0187JSP Conclusions Stimulation site significantly affected the evoked sensations. – Stimulation of ventral/ulnar aspect more consistent and better chance of “touch” or “vibration” perception. Number of pulses significantly affected evoked sensations. Sensation magnitude was easier to modulate than modality, location, and quality. Appropriate selection of stimulation patterns is important to artificially induce reliable sensations.

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