Using cursor measures to investigate the effects of impairment severity on cursor control for youths with cerebral palsy

Examining Dynamic Control-Display Gain Adjustments to Assist Mouse-Based Pointing for Youths with Cerebral Palsy

“…The PointAssist study on elderly whose motor control lacks sophistication showed no significant advantages on MT, NS, and number of slip-offs (target reentry). Our results are similar to PointAssist, although PointAssist aimed to enhance accuracy, and we aimed to enhance speed according to our findings in an earlier study [13].…”

“…We have evaluated the movement of individuals with CP in two studies. The first study showed that for individuals with CP, it is more important to focus on the development of user interfaces and algorithms to increase speed because they already appear to have sophisticated accuracy [13]. The second study examined both system (width and amplitude) and human effects (errors, slips off the target, etc) that contribute to the speed and accuracy of cursor movement of youths with CP and determined that the most significant human effect is the curvature index [14].…”

Assisted Interaction Data Analysis of Web-Based User Studies

“…• Accuracy measures: Trajectory distance (cursor travel distance), curvature index (CI) relation between optimal path and path followed, distances to the centre of the target and to the last click and ratio of start-end position amplitude to start-target centre amplitude [1]. Fig.…”

Human-computer interaction for users with cerebral palsy based on head orientation. Can cursor’s movement be modeled by Fitts’s law?

“…While these solutions may enable computer access for this population, few of them had undergone systematic evaluation for CP. As Almanji et al (2014) argued, the use of assistive technology for computer access encountered barriers that led to the use of typical mice, trackballs or touch screens for practical reasons. Fitts's law (Fitts (1954)) is one of the paradigms that the HCI community applies to assess usability.…”

“…The research directed to individuals with severe motor disorders (MACS IV and V) is scarce. Our second contribution is to assess the performance of the ENLAZA head mouse when it is used by individuals with CP MACS IV and V. While Davies et al (2014) observed that Fitts's law cannot be applied in youths with CP, Almanji et al (2014) specified that there was a correlation between speed and accuracy, but not as strong as in typically developing youths. We expect to find similar differences between users with and without CP in our study.…”