Peregrin J, Valach M, Vít F, Kuba M
Physiol Bohemoslov. 1984;33(4):353-61.
Visual evoked responses (VERs) to checkboard-reversal photic stimuli were recorded in 30 healthy experimental subjects with a mean age of 32 years. In 20 cases the stimuli were presented monocularly and in 10 cases binocularly. The estimated mean signal-to-noise ratio (SNR) of the individual VERs was found to be 0.245 +/- 0.092 for monocular stimulation and 0.444 +/- 0.23 for binocular stimulation. The power-based SNR of the averaged VERs was 24.5 and 44.4 respectively. The SNR was raised the most effectively by a new selective averaging variant applied after latency correction of the individual VERs; in the case of monocular stimulation the SNR rose to a mean 58.94 and in binocular stimulation to a mean 87.42. The mean proportion of discarded single VERs was 24%.
在30名平均年龄为32岁的健康实验对象中记录了对棋盘格反转光刺激的视觉诱发电位（VERs）。其中20例采用单眼刺激，10例采用双眼刺激。单眼刺激时，个体VERs的估计平均信噪比（SNR）为0.245±0.092，双眼刺激时为0.444±0.23。平均VERs的基于功率的SNR分别为24.5和44.4。在对个体VERs进行潜伏期校正后应用一种新的选择性平均变体，能最有效地提高SNR；单眼刺激时，SNR平均升至58.94，双眼刺激时平均升至87.42。被舍弃的单个VERs的平均比例为24%。
