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Evaluating Muscle Activity During Work With Trackball, Trackpad, Slanted, and Standard Mice

Yasser Labbafinejad, Mansour Eslami-Farsani, Saber Mohammadi, Mohamad Sadegh Ghasemi, Mahnoush Reiszadeh, Naser Dehghan
2019 Iranian Rehabilitation Journal  
4 mice.  ...  The electrical activity of EDC, ECU, ECR, FDS, PQ, and FDL muscles was recorded by EMG while performing a standard task with each mouse. The order of using each mouse was randomized.  ...  Figure 2 . 2 EMG of the user during the task with a trackball mouse et al. examined the ECU, FDS, FDI, EDC, and ECR muscles [5].  ... 
doi:10.32598/irj.17.2.121 fatcat:bts5fu2cn5dgnmjtu7sh2a7lgq

Evaluating the Ergonomics in Interaction with Computers

Luis Miguel Munoz
2016 Journal of Ergonomics  
This norm suggests a set of procedures and recommendations with the aim of evaluate some kind of tasks (pointing, selecting, drawing, dragging...) and design over non-keyboard input devices (mice, trackballs  ...  Nevertheless, it has sense the study of the impact of the physical fatigue for some input interface devices (joysticks, mice, trackballs...) over the set finger-hand-forearm.  ...  This norm suggests a set of procedures and recommendations with the aim of evaluate some kind of tasks (pointing, selecting, drawing, dragging…) and design over non-keyboard input devices (mice, trackballs  ... 
doi:10.4172/2165-7556.1000e149 fatcat:itbkbm27ebcytcj4qj4jmnjeiq

Trackball text entry for people with motor impairments

Jacob Wobbrock, Brad Myers
2006 Proceedings of the SIGCHI conference on Human Factors in computing systems - CHI '06  
Our studies show that able-bodied users who were unfamiliar with trackballs could write at about 10 wpm with <4% total errors after 45 minutes.  ...  In eight sessions, a motor-impaired trackball user peaked at 7.11 wpm with 0% uncorrected errors, compared to 5.95 wpm with 0% uncorrected errors with an on-screen keyboard.  ...  Their study of five input devices [2] shows that trackballs are comparable to touchpads-but both are worse than mice-and that trackballs perform best relative to other devices for short straight-line  ... 
doi:10.1145/1124772.1124845 dblp:conf/chi/WobbrockM06 fatcat:t74zwfnxvrbndgwc6yjdwtglym

Enabling devices, empowering people: The design and evaluation ofTrackball EdgeWrite

Jacob O. Wobbrock, Brad A. Myers
2008 Disability and Rehabilitation: Assistive Technology  
In a study of a real trackball user with a spinal cord injury, his best prior performance with character-level Trackball EdgeWrite was both slower and less accurate than his performance with the new word-level  ...  They found that trackballs are comparable to touchpads -but both are worse than mice -and that trackballs perform best relative to other devices for short straight-line trajectories less than 250 pixels  ... 
doi:10.1080/17483100701409227 pmid:18416517 fatcat:ax3xn7lhkfbqhkz6q7dtbqcq2i

From letters to words

Jacob O. Wobbrock, Brad A. Myers
2006 Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility - Assets '06  
Unlike most word completion designs, which require users to select words from a list, our technique allows users to select words by performing a fluid crossing gesture.  ...  The results also show that word-level Trackball EdgeWrite is 46.5% faster and 36.7% more accurate than our subject's prior peak performance with character-level Trackball EdgeWrite, and 75.2% faster and  ...  Despite their inferior performance compared to mice for ablebodied users, trackballs are preferred by many people [10, 33] .  ... 
doi:10.1145/1168987.1168990 dblp:conf/assets/WobbrockM06 fatcat:hhx6ckzqsjbzrdfruglxqwouji

A comparison of area pointing and goal crossing for people with and without motor impairments

Jacob O. Wobbrock, Krzysztof Z. Gajos
2007 Proceedings of the 9th international ACM SIGACCESS conference on Computers and accessibility - Assets '07  
We present a study of 16 people, 8 of whom had motor impairments, using mice and trackballs to do area pointing and goal crossing.  ...  Prior work has highlighted the challenges faced by people with motor impairments when trying to acquire on-screen targets using a mouse or trackball.  ...  Neuropathy MI8 m 49 yes trackball Spinal Cord Injury for MI3 and MI6, who used both mice and trackballs.  ... 
doi:10.1145/1296843.1296847 dblp:conf/assets/WobbrockG07 fatcat:kzozioxx45g7jaxxfgjf26z54y

Goal Crossing with Mice and Trackballs for People with Motor Impairments

Jacob O. Wobbrock, Krzysztof Z. Gajos
2008 ACM Transactions on Accessible Computing  
Prior research shows that people with motor impairments face considerable challenges when using conventional mice and trackballs.  ...  Our performance results indicate that although Fitts' throughput for ablebodied users is higher for area pointing than for goal crossing (4.72 vs. 3.61 bits/s), the opposite is true for users with motor  ...  Device was also significant (F 1,460.1 = 7.72, p < .01), with trackballs peaking earlier than mice.  ... 
doi:10.1145/1361203.1361207 fatcat:umobiik6nbfd7kxrspfvb7s4be

Exploring the design of accessible goal crossing desktop widgets

Eun Kyoung Choe, Kristen Shinohara, Parmit K. Chilana, Morgan Dixon, Jacob O. Wobbrock
2009 Proceedings of the 27th international conference extended abstracts on Human factors in computing systems - CHI EA '09  
Although goal crossing with pen-based input devices has been studied, pen-based designs have limited applicability on the desktop because the pen can "fly in," cross, and "fly out," whereas a persistent  ...  Prior work has shown that goal crossing may be a more accessible interaction technique than conventional pointing-and-clicking for motor-impaired users.  ...  Users with motor impairments may have tremor or poor coordination, which affects their use of mice or trackballs during conventional point-and-click tasks ( Figure 1a ).  ... 
doi:10.1145/1520340.1520563 dblp:conf/chi/ChoeSCDW09 fatcat:y3ybu6wgs5ax3krsoh73sobz6u

Using multiple case studies in ergonomics: an example of pointing device use

Robin Burgess-Limerick, Bill Green
2000 International Journal of Industrial Ergonomics  
An implication of these data is that the introduction of an alternate pointing device such as a trackball should be considered as an intervention, but that the intervention should be undertaken with care  ...  All were familiar with the use of computer mice, but had no previous experience with other pointing devices.  ...  Figure 1 : 1 Maximum and average wrist extension and ulnar deviation in horizontal (Hz) and vertical (Vt) Trials performed with mouse and trackball.  ... 
doi:10.1016/s0169-8141(00)00013-5 fatcat:awrbmfthb5cpnixmewlpx7zz2e

Human performance using computer input devices in the preferred and non-preferred hands

Paul Kabbash, I. Scott MacKenzie, William Buxton
1993 Proceedings of the SIGCHI conference on Human factors in computing systems - CHI '93  
Tasks were tested using three different input devices: a mouse, a trackball, and a tablet-with-stylus.  ...  The trackball had the least degradation across hands in performing the tasks, however it remained inferior to both the mouse and stylus.  ...  While there was the least change between hands with the trackball, non-dominant performance with the mouse was still far superior.  ... 
doi:10.1145/169059.169414 dblp:conf/chi/KabbashMB93 fatcat:7waapjv3rbfzxbppmbvyrcudau

Virtual trackballs revisited

K. Henriksen, J. Sporring, K. Hornbaek
2004 IEEE Transactions on Visualization and Computer Graphics  
Shoemake extends the scope of the virtual trackball to the full screen. Unfortunately, Shoemake's virtual trackball is inhomogeneous and discontinuous with consequences for usability.  ...  Finally, we review Bell's virtual trackball [3] and discuss studies of the usability of virtual trackballs.  ...  The main usability problem with the virtual trackballs was that users were unsure about the difference between being inside and outside the center of the virtual trackballs.  ... 
doi:10.1109/tvcg.2004.1260772 pmid:15384645 fatcat:pazp6pscrjdcll3eftommgwnpe


Marcos Balsa Rodríguez, Marco Agus, Fabio Marton, Enrico Gobbetti
2014 Proceedings of the Nineteenth International ACM Conference on 3D Web Technologies - Web3D '14  
We report also on a preliminary user-study comparing the performances of our camera navigation method with respect to the most popular Virtual TrackBall implementations, with and without pivoting.  ...  The system integrates a networked architecture for adaptive on-device rendering of multiresolution surfaces with a simple and effective interactive camera controller customized for touchenabled mobile  ...  Figure 9 : 9 User study performed on a Nexus 7 tablet. ACeViT compared to Virtual TrackBall with fixed pivot and with manual pivot positioning.  ... 
doi:10.1145/2628588.2628593 dblp:conf/vrml/RodriguezAMG14 fatcat:vnwceixdyrgqlkcuwnun6uusta

A comparison of three selection techniques for touchpads

I. Scott MacKenzie, Aleks Oniszczak
1998 Proceedings of the SIGCHI conference on Human factors in computing systems - CHI '98  
Two conventional methodsusing a physical button and using "lift-and-tap" -were compared with a new method using finger pressure with tactile feedback.  ...  The latter employs a pressure-sensing touchpad with a built-in relay.  ...  For all three selection techniques, the measures for throughput were low -lower than those typically found with trackballs or mice, for example.  ... 
doi:10.1145/274644.274691 dblp:conf/chi/MacKenzieO98 fatcat:gs7wub3auve3physud3aeea74y

Accuracy measures for evaluating computer pointing devices

I. Scott MacKenzie, Tatu Kauppinen, Miika Silfverberg
2001 Proceedings of the SIGCHI conference on Human factors in computing systems - CHI '01  
The theoretical basis and computational techniques for the measures are described, with examples given. An evaluation with four pointing devices was conducted to validate the measures.  ...  In view of the difficulties in evaluating computer pointing devices across different tasks within dynamic and complex systems, new performance measures are needed.  ...  Such behaviour is undesirable and may impact user performance. Figure 2.  ... 
doi:10.1145/365024.365028 dblp:conf/chi/MacKenzieKS01 fatcat:yc6lsz2rezhcjhp6jcxrtvpaze

Pointing Devices for Wearable Computers

Andrés A. Calvo, Saverio Perugini
2014 Advances in Human-Computer Interaction  
We present a survey of pointing devices for wearable computers, which are body-mounted devices that users can access at any time.  ...  The track mouse also provides a trigger for a user to perform drag-and-drop operationsa user holds the trigger with his index finger while moving the trackball with his thumb (the trigger is also a redundant  ...  It contains a trackpoint that a user operates with his thumb and a button similar to a trigger that a user presses with his index finger to perform a primary click [14] .  ... 
doi:10.1155/2014/527320 fatcat:nanvwrmfo5gidbojmen4ywepbq
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