視覚および聴覚刺激による跳躍反応時間の時系列構造

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  • シカク オヨビ チョウカク シゲキ ニ ヨル チョウヤク ハンノウ ジカン ノ ジケイレツ コウゾウ
  • Time series structure of jumping reaction time with visual and auditory stimulus

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To investigate the time series structure of jumping reaction time with visual and auditory stimulus, onset time of (1) M. vastus lateralis EMG amplitude, (2) motor response, (3) M. gastrocnemius EMG amplitude, (4) knee joint extension, (5) plantar flexion, respectively following stimulus and (6) jumping reaction time were measured concerning both light and sound in 46 young female subjects. Onset time of (1) was earlier at sound than light stimulus. But the time lag of (1) to (6) was larger at sound. Factor analysis was applied to time series data i. e. from (1) to (6), and 3 factors were extracted. The loading of factor 1 was large at onset time of above discrived (1) and (2) component. Then linear discriminant function on the 3 factors was obtained, and there the coefficient of factor 1 played extremely high significant contribution to discriminate data of each stimulus. As the result, it was made clear that jumping reaction time with visual and auditory stimulus was strongly featured by the onset time of M. vastus lateralis EMG amplitude and that of motor response. (Accepted September 9, 2003)

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