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Human brain function that produces illusory wide field via local accumulation, and its application for visual and haptic 's devices

人脑通过局部积累产生虚幻广域的功能及其在视觉和触觉设备中的应用

基本信息

批准号：
19330163
负责人：
WAKE Tenji
金额：
$ 9.98万
依托单位：
Kanagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2007
资助国家：
日本
起止时间：
2007 至 2010
项目状态：
已结题

项目摘要

The change detection in flicker paradigm has been examined by glaucoma and pigmentary retinal degeneration with defect of visual field. The target is changed in color and orientation. It was shown that the result of the change detection was influenced by aging and the size of visual field defect. When observers search a changed target, the eye movement differs with limited size of visual field of observers. The eye movement of glaucoma and pigmentary retinal degeneration is similar to visual field of 4゜to 8゜in observers without visual field defect. Moreover, the reaction time in visual change detection is shorter than that in tactile change detection. Based on the reaction time in various size of visual field , tactile field was estimated. As the results, the tactile ield was approximately 0.5゜.In the dual task, luminance and color contrast sensitivity was measured under various eccentricity of retina. Luminance and color contrast sensitivity with RSVP were decreased with the increase of eccentricity. Furthermore, older observers show lower contrast sensitivity than younger adult observers in color contrast sensitivity. On the other hand, patterns involving the three dimensional information are presented to congenitally and adventitiously blind persons. It was shown that the congenitally blind persons can not perceive the three dimensional information in haptic mode, but the adventitiously blind persons can perceive in haptic mode. These findings imply that visual experiences play an important role in order to perceive tactile patterns. Furthermore, it was found that visual readability and attention are important in comfort of the underground space. On the other hand, voting system have been developed by using a divided images cryptography technology.

闪烁范式的变化检测已经在青光眼和伴有视野缺陷的色素性视网膜变性中被检测到。目标在颜色和方向上发生变化。结果表明，变化检测的结果受年龄和视野缺陷大小的影响。当观察者搜索一个变化的目标时，观察者的视场大小是有限的，其眼动是不同的。无视野缺陷的青光眼和视网膜色素变性患者的眼球运动与4゜~8゜的视野相似。此外，视觉变化检测的反应时比触觉变化检测的反应时短。根据不同大小视野下的反应时，估算触觉视野。结果表明，触觉视野约为0.5゜。在双重任务中，测量了不同偏心率下的亮度和颜色对比敏感度。随着偏心率的增加，RSVP的亮度和颜色对比度敏感度降低。此外，年龄较大的观察者在颜色对比敏感度上表现出较低的对比敏感度。另一方面，涉及三维信息的图案被呈现给先天和外在盲人。结果表明，先天盲人不能以触觉方式感知三维信息，而外源性盲人则能以触觉方式感知三维信息。这些发现表明，视觉体验在感知触觉模式方面发挥着重要作用。此外，研究还发现，视觉可读性和注意力对于地下空间的舒适性非常重要。另一方面，利用分割图像加密技术开发了投票系统。