Evaluation of Software Usability Using Electroencephalogram-Comparison of Frequency Component between Different Software Versions

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  • Uwano Hidetake
    Department of Information Science, Nara Institute of　Science and Technology
  • Ishida Kyoko
    Department of Information Science, Nara Institute of　Science and Technology
  • Matsuda Yuko
    Department of Information Science, Nara Institute of　Science and Technology
  • Fukushima Shota
    Fujitsu Ltd.
  • Nakamichi Noboru
    Department of Information and Telecommunication Engineering, Nanzan University
  • Ohira Masao
    Department of Information Science, Nara Institute of　Science and Technology
  • Matsumoto Ken-ichi
    Department of Information Science, Nara Institute of　Science and Technology
  • Okada Yasunori
    Medical System Educational Center Inc.

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Other Title
  • 脳波を利用したソフトウェアユーザビリティの評価バージョン間における周波数成分の比較-異なるバージョン間における周波数成分の比較
  • 脳波を利用したソフトウェアユーザビリティの評価--異なるバージョン間における周波数成分の比較
  • ノウハ オ リヨウシタ ソフトウェア ユーザビリティ ノ ヒョウカ コトナル バージョンカン ニ オケル シュウハスウ セイブン ノ ヒカク

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Abstract

<p>In this paper, we measure electroencephalograms (EEGs) for quantitative evaluation of software usability. Two different (newer and older) versions of same software were selected to intentionally differentiate a subjects' mental state in our experiment. The versions have graphical user interfaces (GUIs) for the main window, which is extremely different from each other, such as different name of menus, commands and different appearance of command dialogs. While the older version is easy to use for our subjects, the newer version of the software is more likely to disturb users' tasks because it requires a user to restudy the interface of the software. Therefore, we can easily compare subjects' EEGs in an uncomfortable situation with that in a comfortable situation. In the experiment, we used alpha-wave, beta-wave, and beta/alpha as metrics of subjects' EEGs. As the result, we found significant differences of alpha-wave, beta-wave and beta/alpha between two versions. The results of questionnaires performed after the experiment sup-ports the differences, and we also found the correlation between the metrics and result of the questionnaire.</p>

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