Bobak P, Bodis-Wollner I, Harnois C, Thornton J
Invest Ophthalmol Vis Sci. 1984 Aug;25(8):980-3.
The effect of contrast on visual evoked potential (VEP) amplitude was examined in nine observers. A 6.0 cycles/deg (cpd) grating was modulated in an "on-off" mode at 7.5 Hz. The VEP response contains significant first and second harmonic components: their growth with contrast is parallel, each function consisting of two limbs. The data are consistent with the hypothesis that the pattern VEP obtained with "on-off" presentation may reflect the contributions of "low" and "high" contrast neuronal populations demonstrated in physiological studies of the primate.
在九名观察者中研究了对比度对视觉诱发电位（VEP）振幅的影响。一个6.0周/度（cpd）的光栅以7.5赫兹的“开-关”模式进行调制。VEP反应包含显著的一次和二次谐波成分：它们随对比度的增长是平行的，每个函数都由两个分支组成。这些数据与以下假设一致，即通过“开-关”呈现获得的图形VEP可能反映了在灵长类动物生理学研究中所证明的“低”和“高”对比度神经元群体的贡献。
