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. Author manuscript; available in PMC: 2015 Jun 18.
Published in final edited form as: IEEE Trans Neural Syst Rehabil Eng. 2008 Oct;16(5):497–504. doi: 10.1109/TNSRE.2008.2003375

Fig. 3.

Fig. 3

(a) Relative 3-D position and orientation of the bilateral three-axis sensor modules and the permanent magnetic tracer attached to the user’s tongue. (b) Original, transformed, and differential outputs of the Z-axis sensors when the subject issues two left mouse commands while walking in the laboratory.