图形翻转视觉诱发电位正常值的确定及其稳定性的评价  

Establishment of Normal Criteria for H-PRVEP and Comparison of Their Stability

作　　者：南振鸿[1] 杨得泰[1] 李盛昌[2] 陈道莅 

机构地区：[1]上海市第一人民医院神经外科,200080 [2]上海医科大学附属华山医院神经病学研究所

出　　处：《中华物理医学杂志》1997年第3期146-148,共3页Chinese Journal of Physical Medicine and Rehabilitation

摘　　要：目的:建立正常人半视野图形翻转视觉诱发电位(H-PRVEP)中P100各参数的正常值标准并比较这些参数的稳定性。方法:23～54岁正常成人67例,按性别分组,在相同条件下,采用半视野图形翻转刺激的方法,测得P100潜伏期,P100眼间、眼内潜伏期差。P100波幅,P100眼间、眼内波幅比,P100时程,P100眼间、眼内时程差等参数的正常值,并比较性别间参数的差异(t检验);同时根据变异系数比较各参数的稳定性。结果:男性潜伏期较长,女性波幅较大,但个体自身对照参数无显著差异;有关潜伏期参数稳定可靠,变异较小。结论:选用P100潜伏期及其相对数指标可以敏感、可靠反映视觉系统的功能状态。Object: To establish normal range of hemi-field pattern reversal visual evoked potentials (H-PRVEP) and compare their stability. Methods: According to sexes, 67 cases of normal adults, ranging from 23 to 54 years old, were divided into two groups. They were examined by H-PRVEP. Normal range about P100 latency and its inter-, intra-eye's difference, P100 amplitude and its inter-, intra-eye's ratio, P100 time length and its inter-, intra-eye's difference were established, and so were normal range about P100 self-contrasting parameters. The t-test was applied in statistical comparison between male and female, then differential ratio was adopted for comparing the stability of various parameters. Results: P100 latency of male is longer and its amplitude is lower. No statistical difference among self - contrasting parameters. Parameters of P100 latency were the most stable. Conclusion: Parameters of P100 latency can best reflect the functional state of visual system, both sensibly and credibly.

关 键 词：视觉诱发电位 视觉 生理学 图形翻转 

分 类 号：R339.14[医药卫生—人体生理学]