Douthwaite W A, Jenkins T C
School of Optometry, University of Bradford, West Yorkshire, UK.
Ophthalmic Physiol Opt. 1988;8(2):221-6. doi: 10.1111/j.1475-1313.1988.tb01041.x.
The amplitude repeatability of pattern reversal visual evoked response using a 5.5 and 40' arc check was investigated in twelve subjects with each subject recording ten 64 sweep runs. The variability by visual inspection or by analysis of variance suggests that a single run will provide a representative amplitude for a 40' arc check whereas the 5.5' check will require more runs merged together before the amplitude is stable. The larger spread of error encountered with the 40' arc check may point to a visual component contributing to more amplitude variability. The possibility of making some assessment of the level of noise present during recording is discussed.
在12名受试者中，使用5.5和40'弧度检查，对图形翻转视觉诱发电位的幅度重复性进行了研究，每个受试者记录10次64次扫描的运行。通过目视检查或方差分析得出的变异性表明，单次运行可为40'弧度检查提供代表性幅度，而5.5'检查在幅度稳定之前需要合并更多的运行。40'弧度检查中遇到的较大误差范围可能表明视觉成分导致了更多的幅度变异性。文中还讨论了对记录过程中存在的噪声水平进行某种评估的可能性。
