けん玉熟練者における視覚情報の探索過程

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書誌事項

タイトル別名
  • Movement to Facilitate Picking up Visual Information by Expert Kendama Players
  • ケンダマ ジュクレンシャ ニ オケル シカク ジョウホウ ノ タンサク カテイ

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抄録

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

収録刊行物

  • 認知科学

    認知科学 21 (3), 325-343, 2014

    日本認知科学会

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