[不同视野刺激诱发的模式翻转视觉诱发电位]
[The PRVEPs evoked by different fields stimulation].
作者信息
Li Yu-fei, Liu Ji-hui, Chen Xiao-lei, Xu Jing-tao
机构信息
School of Forensic Medicine, China Medical University, Shenyang 110001, China.
出版信息
Fa Yi Xue Za Zhi. 2009 Feb;25(1):15-8.
OBJECTIVE
To study the character of the PRVEPs evoked by different stimulation fields in normal-vision subjects and its value in forensic medicine.
METHODS
The PRVEPs were evoked by full-field, central-field and peripheral-field respectively in 30 subjects (60 eyes) and the latency and amplitude of N1 and P1 were analyzed.
RESULTS
There was no statistically significant difference in the latency and amplitude of PRVEPs between right and left eyes. The appearance probability of all the waves was 100% at the different stimulations but that of N1 was 36.77% at the central-field. There was statistically significant difference in the latency of N1 at the full field and peripheral field stimulations and there was no statistically significant difference in the amplitude. There was statistically significant difference in the latency and amplitude of P1 at the full field, central field and peripheral field stimulation.
CONCLUSION
The PRVEPs evoked by different field stimulations can be used to evaluate the functions of the different area retina and can be used to identify the exaggerated or pretended visual dysfunction.
目的
研究正常视力受试者不同刺激野诱发的图形视网膜电图（PRVEP）特征及其法医学价值。
方法
对30例受试者（60只眼）分别进行全视野、中心视野和周边视野刺激诱发PRVEP，分析N1和P1的潜伏期及波幅。
结果
双眼间PRVEP的潜伏期及波幅差异无统计学意义。不同刺激条件下各波的出现率均为100%，但中心视野刺激时N1波的出现率为36.77%。全视野与周边视野刺激时N1波潜伏期差异有统计学意义，波幅差异无统计学意义。全视野、中心视野和周边视野刺激时P1波潜伏期及波幅差异有统计学意义。
结论
不同视野刺激诱发的PRVEP可用于评估视网膜不同区域的功能，可用于鉴别夸大或伪装的视觉功能障碍。
Zotero 插件