小视差交叉视差认知过程研究

摘要

采用静态随机点图做为刺激，对15名正常人在交叉视差条件下，针对小视差（3.27'，6.54'，8.18'，11.45'，14.72'，17.99'，21.26'，24.53'）状态进行认知过程研究。结果为：随着视差的增大，识别靶刺激的平均反应时和正确率基本呈现出逐渐增加的趋势。在小视差交叉视差条件下，视觉系统对6'左右的视差反应时最为敏感，为立体电影的拍摄提供了理论依据，并为进一步探索精细立体视的脑神经机制提供了有力的支持。%A new set of static random-dot stereograms (RDS) free of monocular clues was utilized as stimulus to in-vestigate the crossed disparity in 15 normal subjects. The response of every subje-ct was recorded in different disparate disparity stimuli (3.27', 6.54', 8.18', 11.45', 14.72', 17.99', 21.26', 24.53') . The result show that the response times and accuracy were increasing with the increasing disparity. And the conclusion was proposed that the visual system was the most sensitive to crossed disparity about 6 arc min. The theoretical basis for the 3D film and strong support are provided to further explore the fine stereopsis for the neural mechanisms.