MONOCULAR CUES WITH NORMAL AND DEFICIENT STEREOPSIS

具有正常立体视觉和立体视觉缺陷的单目提示

• 批准号: 3258971
• 负责人: MYRON L BRAUNSTEIN
• 金额: $ 3.57万
• 依托单位: UNIVERSITY OF CALIFORNIA-IRVINE
• 依托单位国家: 美国
• 财政年份: 1983
• 资助国家: 美国
• 起止时间: 1983-07-01 至 1986-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3258971
• 关键词: binocular vision; diagnosis quality /standard; human subject; vision disorders; vision tests; binocular vision; diagnosis quality /standard; human subject; vision disorders; vision tests

Depth cues based on dynamic changes in the retinal projection supplement stereoscopic depth in normal vision, and may be especially important to persons lacking stereoscopic vision. The effectiveness of two dynamic monocular cues--velocity gradients and occlusion (the covering and uncovering of more distant objects by nearer objects)--will be studied for subjects with normal binocular vision and with dysfunctions in stereoscopic depth perception. A three part approach is proposed: (1) The first part addresses unresolved questions about the effectiveness of dynamic monocular cues for persons with normal stereoscopic vision. The first experiment contrasts the effectiveness of dynamic occlusion and perspective in providing relative distance information. The second experiment extends research on occlusion to scenes lacking distinct contours. The third experiment examines the trade--off between velocity, texture density, and observation time in determining the accuracy with which relative distance can be judged from a velocity gradient. (2) The second part addresses the question of whether the ability to perceive relative distance on the basis of dynamic monocular cues is affected by deficits in stereoscopic vision. Recent studies of dynamic cue effectiveness will be replicated with a clinical population. (3) The third part examines the use of monocular/stereoscopic conflict tests as measures of reliance on stereoscopic vision. These measures would supplement tests of stereoacuity. Subjects varying in stereoacuity will be asked to make relative depth judgments when velocity gradients or dynamic occlusion provide depth information opposite to that provided by stereoscopic cues. In addition to increasing understanding of dynamic monocular depth cues, this research should lead to improved methods for assessing the depth perception of persons lacking stereoscopic vision, methods for training such persons in the more effective use of monocular cues, and measures of the relative reliance on monocular as opposed to stereoscopic cues by persons during improvement or increased dysfunction in stereoacuity.

基于视网膜投影补充的动态变化的深度线索 正常视力中的立体深度，对于 缺乏立体视力的人。 两个动态的有效性 单眼线索 - 玻璃梯度和遮挡（覆盖和遮挡 通过靠近物体发现更遥远的物体） - 将研究 具有正常双眼视力和功能障碍的受试者在立体中 深度感知。 提出了三部分方法：（1）第一部分 解决有关动态单眼有效性的未解决的问题 具有正常立体视力的人的提示。 第一个实验 对比了动态阻塞和视角的有效性 提供相对距离信息。 第二个实验延伸 对缺乏不同轮廓的场景的闭塞研究。 第三 实验检查了速度，质地密度和 观察时间确定相对距离的准确性 可以从速度梯度来判断。 （2）第二部分地址 问题是否基于感知相对距离的能力 动态单眼线索受到立体视觉缺陷的影响。 动态提示有效性的最新研究将通过 临床人群。 （3）第三部分研究了 单眼/立体冲突测试作为对依赖的措施 立体视力。 这些措施将补充 立体定位。 立体定位的主题将被要求做出 速度梯度或动态阻塞时相对深度判断 提供与立体提示相反的深度信息。 除了对动态单眼线索的了解增加之外， 这项研究应导致改进的方法来评估深度 对缺乏立体视觉的人的感知，训练方法 这样的人在更有效地使用单眼线索，以及 相对依赖单眼而不是立体提示 在立体稳定中改善或增加功能障碍时的人。