Journal of Rehabilitation Research & Development (JRRD)

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Volume 48 Number 3, 2011
   Pages 253 — 266

Abstract —  Optimizing interoperability between video-oculographic and electromyographic systems

Javier Navallas, PhD;1* Mikel Ariz, MSc;1 Arantxa Villanueva, PhD;1 Javier San Agustín, PhD;2 Rafael Cabeza, PhD1

1Department of Electrical and Electronic Engineering, Public University of Navarra, Campus de Arrosadia, Pamplona, Navarra, Spain; 2Innovative Communication Group, IT University of Copenhagen, Copenhagen, Denmark

Abstract — A new system is presented that enhances the interoperability between a video-oculographic (VOG) system for mouse movement control and an electromyographic (EMG) system for mouse click detection. The proposed VOG-EMG system combines gaze and muscle information to minimize the number of undesired clicks due to involuntary activations and environmental noise. We tested the system with 24 subjects, comparing three different configurations: one in which the VOG and EMG systems worked independently and two in which we used VOG gaze information to improve the EMG click detection. Results show that the number of false-positive click detections can be reduced when VOG and EMG information is combined. In addition, the third configuration, including extra processing, can reduce the activation delay produced because of the combined use of the VOG and EMG systems. The new VOG-EMG system is meant to be used in noisy environments in which the number of false clicks may impeach a reliable human-computer interaction.

Key words: eye tracking, gaze interaction, human-computer interface, Midas touch, motor control, multimodal interface, onset detection, rehabilitation, severe motor impairment, surface electromyography, video-oculography.

View HTML  ¦  View PDF  ¦  Contents Vol. 48, No. 3
This article and any supplementary material should be cited as follows:
Navallas J, Ariz M, Villanueva A, San Agustín J, Cabeza R. Optimizing interoperability between video-oculographic and electromyographic systems.
J Rehabil Res Dev. 2011; 48(3):253-66.

Last Reviewed or Updated  Tuesday, March 22, 2011 11:32 AM

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