A comparison of input devices in element pointing and dragging tasks
CHI '91 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A comparison of three selection techniques for touchpads
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Testing pointing device performance and user assessment with the ISO 9241, Part 9 standard
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Accuracy measures for evaluating computer pointing devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Cursor measures for motion-impaired computer users
Proceedings of the fifth international ACM conference on Assistive technologies
A multi-touchpad based human computer gesture interface for people with disabilities
Telehealth/AT '08 Proceedings of the IASTED International Conference on Telehealth/Assistive Technologies
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In this study, the accuracy of an optical mouse, optical trackball, isotonic joystick, and a FingerWorks MultiTouch Surface (MTS) are compared for users suffering from Parkinsonian tremor and essential tremor. Using a data acquisition program, WinFitts, created at the University of Oregon's HCI Lab, data collected from five subjects with Parkinsonian tremor, five with essential tremor, and eleven with no tremor is analyzed and compared. Both temporal and spatial analyses are obtained from all of the subject data. The time-based measures of performance for each device include the uses of Fitts' law and the Proximity Movement Time, while the spatially-based measures include the use of the Deviation Accuracy and the Click Histogram. A statistical analysis is performed using a t-test to show the differences between the resulting means of some of the measures. By using the MUSIC spectral estimation technique, an analysis of the frequency and the amplitude of the tremor showed how certain devices performed in hand tremor suppression.