首页    期刊浏览 2024年11月28日 星期四
登录注册

文章基本信息

  • 标题:Comparison of Different Pointing Methods for Sound Localizability Measurement in the Vision Impaired Subjects
  • 本地全文:下载
  • 作者:Atsunori Fujii ; Yudai Ohsugi ; Yuki Yamamoto
  • 期刊名称:Journal of PHYSIOLOGICAL ANTHROPOLOGY and Applied Human Science
  • 印刷版ISSN:1345-3475
  • 出版年度:2007
  • 卷号:26
  • 期号:3
  • 页码:381-385
  • DOI:10.2114/jpa2.26.381
  • 出版社:Japan Society of Physiological Anthropology
  • 摘要:

    In order to find out the most suitable and accurate pointing methods to study the sound localizability of persons with visual impairment, we compared the accuracy of three different pointing methods for indicating the direction of sound sources in a semi-anechoic dark room. Six subjects with visual impairment (two totally blind and four with low vision) participated in this experiment. The three pointing methods employed were (1) directing the face, (2) directing the body trunk on a revolving chair and (3) indicating a tactile cue placed horizontally in front of the subject. Seven sound emitters were arranged in a semicircle 2.0 m from the subject, 0° to ±80° of the subject's midline, at a height of 1.2 m. The accuracy of the pointing methods was evaluated by measuring the deviation between the angle of the target sound source and that of the subject's response. The result was that all methods indicated that as the angle of the sound source increased from midline, the accuracy decreased. The deviations recorded toward the left and the right of midline were symmetrical. In the whole frontal area (−80° to +80° from midline), both the tactile cue and the body trunk methods were more accurate than the face-pointing method. There was no significant difference in the center (−40° to +40° from midline). In the periphery (−80° and +80°), the tactile cue pointing method was the most accurate of all and the body trunk method was the next best. These results suggest that the most suitable pointing methods to study the sound localizability of the frontal azimuth for subjects who are visually impaired are the tactile cue and the body trunk methods because of their higher accuracy in the periphery.

  • 关键词:visual impairment; blind; sound localization; direction; pointing
国家哲学社会科学文献中心版权所有