A study for age effects in reliance on lower visual information of environment while walking: The sequential change of eye movements

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  • ITOH Nana
    Keio University Present; National Institute of Advanced Industrial Science and Technology, Institute for Human Science and Biomedical Engineering
  • FUKUDA Tadahiko
    Keio University

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Other Title
  • 歩行時の下方視覚情報への依存における加齢効果：眼球運動の時系列的変化
  • ホコウジ ノ カホウ シカク ジョウホウ エ ノ イゾン ニ オケル カレイコウカ ガンキュウ ウンドウ ノ ジケイレツテキ ヘンカ
  • The sequential change of eye movements
  • 眼球運動の時系列的変化

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The goal of this study was to identify the age difference for dependence on lower information of environment while walking by measuring sequential change of eye movements. Experiment was carried out in a space, which was composed of a flat walkway that was connected to a slope and short stairs. From the experiments, following results have been obtained. 1. The elderly tend to view the floor and foothold as well as to fix their viewing point on the connecting part for longer time than the young do. 2. The elderly need longer viewing time when they see lower level of information and frequency of vertical motion of their eye movements is less than that of the young, and such behaviors show fairly striking contrast against those of the young.<br>These results suggest that the elderly depend on lower information of environment largely more than the young do, even there are no differences of walking speed and cadences. In addition, the sequential change of eye movements of the elderly shows the necessity of confirming their walking conditions through viewing the lower information.

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