Presentation 2007/11/28
Usability evaluation of single-switch scanning methods substituting for mouse pointer operation
Kenji Koyama, Shingo Ishikawa, Toyohiko Hayashi, Yasuo Nakamura, Yuko Wakabayashi, Naoki Tondokoro,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Persons with severe motor disabilities such as ALS patients and patients with cerebral palsy use personal computers (PC) as a tool for communication and social participation. They usually operate PCs with a help of an automatic scanning software together with a single switch. Automatic scanning-based operation of mouse pointer, however, seems difficult for them, because it requires precise input operation in a short period of time. Consequently, erroneous operation occurs frequently, resulting in the increase in operation time, physical fatigue and mental stresses. To alleviate these, the most effective scanning method has to be selected for each individual patient under a certain criterion of usability. As candidates of such usability criteria, total time of operation and the number of times of operation seem suitable. Using these evaluations, we compared usability of typical scanning methods such as section search method, Cartesian-cursor method and their combination, "hybrid method", by means of computer simulation. Introduction of a single error model of operation enabled us to compare the three methods on an equal basis. Through experiments, we found that the minimum time of operation existed for each method, providing us with a clue to theoretical comparison of scanning methods.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) single-switch / scan / mouse pointer / usability and computer simulation
Paper # WIT2007-37
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Committee WIT
Conference Date 2007/11/28(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Usability evaluation of single-switch scanning methods substituting for mouse pointer operation
Sub Title (in English)
Keyword(1) single-switch
Keyword(2) scan
Keyword(3) mouse pointer
Keyword(4) usability and computer simulation
1st Author's Name Kenji Koyama
1st Author's Affiliation Graduate school of Science and Technology, Niigata University()
2nd Author's Name Shingo Ishikawa
2nd Author's Affiliation Department of Biocybernetics, Faculity of Engineering, Niigata University
3rd Author's Name Toyohiko Hayashi
3rd Author's Affiliation Graduate school of Science and Technology, Niigata University:Department of Biocybernetics, Faculity of Engineering, Niigata University
4th Author's Name Yasuo Nakamura
4th Author's Affiliation Department of Biocybernetics, Faculity of Engineering, Niigata University
5th Author's Name Yuko Wakabayashi
5th Author's Affiliation Niigata Intractable Diseases Consulting and Assisting Center
6th Author's Name Naoki Tondokoro
6th Author's Affiliation Center for Independent Living Niigata
Date 2007/11/28
Paper # WIT2007-37
Volume (vol) vol.107
Number (no) 368
Page pp.pp.-
#Pages 8
Date of Issue