随机点立体图刺激引起的立体视觉诱发电位  

Stereoscopic visual evoked potential elicited by staticrandom dot stereogram.

作　　者：胡聪[1] 杨东生[1] 李欣[1] 李慧[1] 冯波[1] 胡学华[1] 胡波[1] 杨湘娟 

机构地区：[1]青岛医学院眼科斜视弱视屈光研究室,青岛海洋大学物理系

出　　处：《中华眼科杂志》1994年第4期286-288,共3页Chinese Journal of Ophthalmology

摘　　要：应用自制电视静态随机点立体图（ＴＶ－ｓｔａｔｉｃｒａｎｄｏｍｄｏｔｓｓｔｅｒｅｏｇｒａｍ，ＴＶ－ＳＲＤＳ）作视差刺激，记录了３５例正常人用三棱镜破坏与不破坏立体视时，１６．５６＇视差刺激的ＶＥＰ和２８例立体视盲者该视差刺激的ＶＥＰ。结果：（１）３３例正常人于刺激后恒定出现一负正复合波；（２）用三棱镜破坏立体视，ＶＥＰ波形消失；（３）立体视盲组，除１例麻痹性斜视外，均未记录到电位变化。作者认为：本实验条件下ＴＶ－ＳＲＤＳ刺激产生的ＶＥＰ是与视差刺激相关的特异性ＶＥＰ，ＴＶ一ＳＲＤＳ是以电生理方法客观测定立体视的有效刺激，是探讨立体视觉的发生、发育的一种方法。AbstractUsing 16.56'visual disparity stimulation producedby television random dot stereogram(TVRDS),werecorded visual evoked potentials(VEPs)elicited from35 normal suUects with and without breaking theirstereopsis and 28 stereoblind subjects. The resultsshOwed that a constant negative -positive wave com-plex was observed in 33 of 35 normal subjects,thisnegative-positive wave complex disappeared when thestereopsis was artificially inhibited by a prism and inthe stereoblind group, and no VEP wave was elicitedin all of the stereoblind patients except in one with paralytic strabismus .The results revealed that under this condition the VEPs elicited by TVRDS were spe-cific VEPs related to visual disparity stimulation and were stereoscopic ones. The TVRDS is an effectiveelectro-physiological means to examine the stereopsisobjectively and a new way to approach the occurrenceand development of stereopsis.

关 键 词：电视 立体 视觉 诱发反应 

分 类 号：R770.43[医药卫生—眼科]