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Cognition and its formation of shape and space in the visual handicapped

视觉障碍者的认知及其形状和空间的形成

基本信息

批准号：
07301010
负责人：
WAKE Tenji
金额：
$ 3.97万
依托单位：
School of Management, Science University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07301010/
关键词：
the visual handicaped low vison postoperative visual perception tactile perception subjective contour similation of low vision visual tactual search perception of shape and space 低視力視覚的探索ぼけ関数主観的輪郭陰の知覚立体視 ATM 触覚による絵単語 /

项目摘要

When image on CRT is blurred, the correct percent is increased with the increase of target size and contrast between target and its background. In visual search for the low vision with opthalmological diseases, the reaction time is longer than that of normal subjects. Furthermore, if contrast between Chinese characters and its background is increased, the reaction time is shorten. Post operative visual perception in the early blind of three subjects was examined. Perception of subjective contour is limitted, but shadow is differenciated from targets. One of three subjects perceived the depth from perspective patten with shade. In tactual perception, the surface with a cavity was observed by active touch. The optimum tacile illusion is observed, when cavity and finger is similar in curvature. The ATM with tactile signs has been developped. The blind subjects evaluated that its machine is useful. Tactile reaction time is about 10s at first time. Two alternative displays have been developed for blind computer user. Subjects who had experience in the mouse operation used tactile assisting devise better than auditory device only.

当CRT上的图像模糊时，随着目标尺寸的增大和目标与背景对比度的增大，目标识别的正确率增大。在视觉搜索中，眼病患者的反应时比正常人长。此外，如果增加汉字与其背景之间的对比度，则反应时缩短。对3例早期失明者进行术后视知觉检查。主观轮廓的感知是有限的，但阴影是区别于目标。三名被试中有一名被试从带有阴影的透视图中感知深度。在触觉感知中，通过主动触摸观察具有空腔的表面。当空腔和手指的曲率接近时，观察到最佳的触觉错觉。开发了带触摸标志的ATM机。盲人受试者评价其机器是有用的。第一次触觉反应时间约为10s。两种可供选择的显示器已经开发了盲人计算机用户。有老鼠操作经验的受试者使用触觉辅助装置的效果优于单纯使用听觉辅助装置。