The response of eye-movement and pupil size to audio instruction while viewing a moving target
ETRA '00 Proceedings of the 2000 symposium on Eye tracking research & applications
Eye tracking in web search tasks: design implications
ETRA '02 Proceedings of the 2002 symposium on Eye tracking research & applications
Frequency analysis of task evoked pupillary response and eye-movement
Proceedings of the 2004 symposium on Eye tracking research & applications
System usability evaluation for input operation using oculo-motors
AUIC '07 Proceedings of the eight Australasian conference on User interface - Volume 64
Assessing usability with eye-movement frequency analysis
Proceedings of the 2008 symposium on Eye tracking research & applications
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Dynamic usability-testing is required for the improvement of various Human-Computer interactive systems. This paper examines the indices of assessing usability using the frequency spectrum of eye-movements up to four Hz. An input operational task experiment was conducted using a mouse (Mouse), a keyboard (KeyBD) and a keypad (KeyPAD), and the conventional subjective system usability measurements (SU-scores) and error rates were measured. Most power spectrum densities (PSD) for eye-movements in the first second of the experiment followed the same order of the SU-scores or error rates. Cross spectrum densities (CSD) between horizontal and vertical eye-movements and coherence as standardized CSD also significantly correlate with the results of the SU-scores and error rates. To determine the frequency range of CSD and coherence for usability assessment, frequency components used as factors were extracted using factor analysis. According to the correlation coefficients between these and the performance of factor scores for predicting the conventional metrics, factor scores of CSD can be better indices for assessing usability than can indices of coherence.