ISSN 0439-755X
CN 11-1911/B
主办：中国心理学会
　　　中国科学院心理研究所
出版：科学出版社

心理学报 ›› 1995, Vol. 27 ›› Issue (2): 181-187.

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与立体视觉相关的视诱发电位研究

雷静江;吴乐正;吴德正;梁炯基   

  1. 中国卫生部眼科学实验室，中国科学院上海生理研究所感觉信息处理研究室
  • 发布日期:1995-06-25 出版日期:1995-06-25
  • 通讯作者: 雷静江

STUDY ON THE PONTENTIAL EVOKED BY STEREOPSIS

Lei Jingjiang; Wu Lezheng; Wu Dezheng; Liang Jiongji (National Ophthalmological Laboratory, Ministry of Public Health, Guangzhou 510060)   

  • Online:1995-06-25 Published:1995-06-25

被引次数

9

摘要： 在微机上编制能产生动态随机点立体图（ＤＲＤＳ），亮暗类棋盘格和随机点背景三种图形刺激的软件．记录了３４例正常人在这三种刺激下的ＶＢＰ．其结果为：（１）ＤＲＤＳ刺激下的ＶＥＰＮ１波潜伏期为２６５±２５ｍｓ，基波能量占总交流能量的６３．２±１８．９％．（２）亮暗类棋盘格刺激下的ＶＥＰＮ１波的潜伏期为１９０±２２ｍｓ，基波能量占总交流能量的３９．２±１９．６％．（３）随机点背景刺激下的ＶＥＰ波则为一些杂乱的小波．结果提示：动态ＲＤＳ刺激下的ＶＥＰ除在潜伏期方面具有特异性外，并在谐波的能量分布上也具有特异性，且客观性更强．根据这些特征有助于对立体视觉功能进行客观性评价．

关键词: 立体视觉, 动态随机点立体图, 视觉诱发电位

Abstract: A software package which could give out three stimuli──Dynamic random dot stereograms (DRDS), Light-dark checkerboard and Random dot background stimulus, was developed. Using the three stimuli respectively, cortical visual evoked potentials (VEPs)in 34 normal subjects were recorded. The results showed that: (1) In the VEP elicited by DRDS, the latency of N1 peak was 265 ± 25ms and the power of the first harmonic was 63.2±18.9 percent of the total power; (2) In the VEP elicited by Light-dark checkerboard, the latency of N1 peak was 190 ± 22ms and the power of the first harmonic was 39.2 ± 19.6 percent of the total power; (3) The VEP elicited by random dot background consisted of some disorderly small waves. The results showed that there were some characteristics in the distribution of harmonics power besides latency of the VEP elicited by DRDS. The above characteristics are helpful in the objective evaluation of stereopsis.

Key words: Stereopsis, Dynamic random dot stereograms, Visual evoked potentials