Perception and haptics: towards more accessible computers for motion-impaired users

For people with motion impairments, access to and independent control of a computer can be essential. Symptoms such as tremor and spasm, however, can make the typical keyboard and mouse arrangement for computer interaction difficult or even impossible to use. This paper describes three approaches to improving computer input effectivness for people with motion impairments. The three approaches are: (1) to increase the number of interaction channels, (2) to enhance commonly existing interaction channels, and (3) to make more effective use of all the available information in an existing input channel. Experiments in multimodal input, haptic feedback, user modelling, and cursor control are discussed in the context of the three approaches. A haptically enhanced keyboard emulator with perceptive capability is proposed, combining approaches in a way that improves computer access for motion impaired users.

[1]  Rüdiger Dillmann,et al.  Haptic output in multimodal user interfaces , 1997, IUI '97.

[2]  Peter Robinson,et al.  Developing a methodology for the design of accessible interfaces , 1998 .

[3]  J. White.  The Americans with Disabilities Act. , 1996, Ohio nurses review.

[4]  Dominic J. A. Welsh,et al.  Codes and cryptography , 1988 .

[5]  Christian Bühler,et al.  Robotics for rehabilitation — a European (?) perspective , 1998, Robotica.

[6]  Peter Robinson,et al.  Investigating the use of force feedback for motion-impaired users , 2000 .

[7]  Peter Robinson,et al.  Investigating the applicability of user models for motion-impaired users , 2000, Assets '00.

[8]  Constantine Stephanidis,et al.  User Interfaces for All: New Perspectives into Human- Computer Interaction , 2001 .

[9]  Krishna Bharat,et al.  Making computers easier for older adults to use: area cursors and sticky icons , 1997, CHI.

[10]  L Gardner,et al.  An appraisal of a selection of products currently available to older consumers. , 1993, Applied ergonomics.

[11]  R Coleman,et al.  A demographic overview of the ageing of First World populations. , 1993, Applied ergonomics.

[12]  Peter Robinson,et al.  Gestures and multimodal input , 1999, Behav. Inf. Technol..

[13]  Kathy S. Lee,et al.  Control of computer-based technology for people with physical disabilities : an assessment manual , 1990 .

[14]  David E. Kieras,et al.  The GOMS family of user interface analysis techniques: comparison and contrast , 1996, TCHI.

[15]  Alan F. Blackwell,et al.  Dasher—a data entry interface using continuous gestures and language models , 2000, UIST '00.

[16]  Ian Oakley,et al.  Putting the feel in ’look and feel‘ , 2000, CHI.

[17]  Allen Newell,et al.  The psychology of human-computer interaction , 1983 .

[18]  P Blenkhorn,et al.  Controlling mouse pointer position using an infrared head-operated joystick. , 2000, IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society.

[19]  Jack Tigh Dennerlein,et al.  Force-feedback improves performance for steering and combined steering-targeting tasks , 2000, CHI.

[20]  Peter Robinson,et al.  Investigating the Cursor Movement Parameters for Haptic Assistance of Motion-impaired Users , 2001 .

[21]  I. Scott MacKenzie,et al.  Accuracy measures for evaluating computer pointing devices , 2001, CHI.

[22]  Acsw John T. Pardeck.  Americans with Disabilities Act of 1990 , 1997 .

[23]  Shumin Zhai,et al.  The influence of muscle groups on performance of multiple degree-of-freedom input , 1996, CHI.