47例弱智儿童视觉诱发电位测试分析  

Visual evoked potentials in MR and normal IQ children

作　　者：潘芳[1] 岳文浩[1] 王迪涛[1] 张红静[1] 江虹[1] 

机构地区：[1]山东大学西校区医学心理教研室,山东济南250012

出　　处：《中国行为医学科学》2001年第2期104-106,共3页Chinese Journal of Behavioral Medical Science

基　　金：山东省科委资助!课题 (90BBICAA2 )

摘　　要：目的　检测MR儿童视觉诱发电位状况 ;方法　以DISA2 0 0 0C型肌电仪对 8.5～ 10岁MR儿童 47例和匹配对照组儿童 5 0例进行VEP检测。结果　MR儿童VEP不具备正常儿童波的形态 ;MR儿童VEP各波出现率较正常儿童低 ,其中P3、N3波的出现率有显著性差异 (P <0 .0 5 )。两组儿童N1波 (右 )、P2波 (左右 )、P3波 (左 )、N3波 (左右 )、N4波 (左右 )潜伏期差异有显著性 (P <0 .0 5 ,P <0 .0 1) ;P2波 (左右 )、N2波 (左右 )、N3波 (右 )波幅差异有显著性 (P <0 .0 5 ,P <0 .0 1)。两组儿童不同时间进行的测试结果无显著性差异。提示MR儿童神经纤维髓鞘化程度和粗纤维的比例较正常儿童低 ,接受刺激产生兴奋的特定皮层神经元同步化兴奋的程度和数量低于正常儿童。结论　VEP可敏感检测出MR儿童与正常儿童大脑功能的差异 ,稳定性良好。可提供大脑发育和结构是否完善的动态指标。Objective To study visual evoked potential in MR and normal children.Method 47 MR (male:female=23:24) and 50 normal children ( male:female=1:1)aged 8.5～10 years old were examined by DIAS 2000 myoelectronics.Results The form of MR children's VEP was flat and not similar to the form of normal children. There were significant difference in the rate of appearance of main components (N1 P2 N3) and the rate of appearance of P3 between MR and normal children. There were significant differnce in N1(right),P2(right and left),P3 (left),N3 (right and left),N4 (right and left) latency and P2 (right and left),N2 (right and left),N3 (right) amplitude in two groups children.The results was same with different examine times in two groups children. Conclusion The results above indicated that VEP test is method to examin children' brain function sensitively and steady.It can be used as a index in judgement of children' brain development and structure.

关 键 词：视觉诱发电位 脑功能 弱智 儿童 测试 

分 类 号：R741.044[医药卫生—神经病学与精神病学]