THE EXPERIMENTAL STUDY OF THE VISUAL PERCEPTION OF THE DEAF PUPILS(1) : ON THE DISCRIMINATION OF THE GLIDING RATE DIFFERENCE

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  • MINAMIDE YOSHIFUMI
    Tokyo Metropolitan Rehabilitation Center for the Physically and Mentally Handicapped

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Other Title
  • 聾生徒の視知覚に関する実験的研究 : (1)わたり速度の弁別について
  • ロウ セイト ノ シ チカク ニ カンスル ジッケンテキ ケンキュウ 1 ワタリ ソクド ノ ベンベツ ニ ツイテ

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This paper is one of the studies to develope the evaluation and the trainig method of the lip reading without giving the lip movements as the stimuli. The circles (compared to the lip shapes) which changed their size at the various rate (=gliding) were used in this study. The subjects were 20 pupils (15 males and 5 females) with the normal IQ, the normal sight. and the severe hearing loss. The circles, which increase (or decrease) their size at two different rate, were shown on the 8 mm film. The subjects were asked to select which changed the size faster. The DL values were obtained by the method of the constant stimuli. As the result of this study, it was found out that the gliding time and the size difference of the circles before and after the glide were the functions of the DL values. Also, the data obtained indicated there were two mechanisms involved in the gliding rate; one for the short gliding time and the other for the long one.

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