Volume 48 Number 3, 2011
Pages 253 — 266
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.
Last Reviewed or Updated Tuesday, March 22, 2011 11:32 AM