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  • 标题:けん玉熟練者における視覚情報の探索過程
  • 本地全文:下载
  • 作者:伊藤 万利子 ; 三嶋 博之 ; 佐々木 正人
  • 期刊名称:認知科学
  • 印刷版ISSN:1341-7924
  • 电子版ISSN:1881-5995
  • 出版年度:2014
  • 卷号:21
  • 期号:3
  • 页码:325-343
  • DOI:10.11225/jcss.21.325
  • 出版社:Japanese Cognitive Science Society
  • 摘要:

    We examined the relationship between dexterity and movement to facilitate picking up visual information in a skilled task, the kendama trick of “swing-in.” Two kendama experts performed the swing-in motion while wearing liquid crystal occlusion goggles in the control and experimental (occluded) conditions. Occlusion glasses were open in the control condition, but open and closed at pre-set intervals in the occluded condition. After practice, the results identified a preference for seeing of the zenith of the ball trajectory for both experts at all levels in the occluded condition. Ball movement in the anterior-posterior axis for both experts was larger in the occluded than in the control condition, and was changed by the opening time of the goggles for expert A. Head movement in the vertical axis for both experts was longer in the occluded than in the control condition, but changed by the goggle’s intervals for expert B. Ball velocity with the coordinate origin at the head for both experts was nearly constant when the ball trajectory was near the zenith in both conditions and when the goggles were open in the occluded condition. However, the orientation of the head was longer in the occluded than in the control condition. These findings suggest that both experts detected optical information for catching the ball when the ball trajectory was near its zenith in intermittent viewing conditions, and that it is easier pick up this information in the occluded condition due the longer duration of the nearly constant relative velocity of the ball. Both experts adjusted their actions to easily detect the necessary optical information under visual constraints, al- though expert A adjusted the movement of the ball and expert B adjusted his head movement to the goggle’s opening intervals.

  • 关键词:こつ; 視覚の身体性; 知覚行為循環; アフォーダンス
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