NDLI: Mapping sensor activation time for typing tasks performed with a tongue controlled oral interface

Content Provider	IEEE Xplore Digital Library
Author	Lontis, E.R. Andreasen Struijk, L.N.S.
Copyright Year	2013
Description	Author affiliation: Dept. of Health Sci. & Technol., Aalborg Univ., Aalborg, Denmark (Lontis, E.R.; Andreasen Struijk, L.N.S.)
Abstract	Two tetraplegic subjects performed typing tasks on a computer in an experiment using a tongue controlled oral interface. This paper reports mapping of the sensor activation time for a full alphabet text input using 10 inductive sensors. A small cylindrical piece of soft ferromagnetic material activated the sensors when placed at or glided along the surface of the sensor. The activation unit was attached to the tongue as the upper ball of a piercing. The tasks consisted of typing characters according to ordered (rows and columns) or random test strings during 30 seconds, with and without deleting characters typed by mistake. Visual feedback assisted the subjects to perform the typing tasks. Average activation times were of 0.82+/-0.38 and 1.06 +/-0.27 seconds respectively for the two subjects. Analysis of activation times may be useful in characterization of the tongue ability to activate the interface as well as in design optimization of the layout of the sensors.
Starting Page	5911
Ending Page	5913
File Size	631474
Page Count	3
File Format	PDF
ISBN	9781457702167
ISSN	1557170X
DOI	10.1109/EMBC.2013.6610897
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-03
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tongue Computers Keyboards Performance evaluation Assistive devices Mice Visualization
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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