Tyler C W, Apkarian P A
Vision Res. 1985;25(6):755-66. doi: 10.1016/0042-6989(85)90183-x.
Monocular and binocular visual evoked potentials were studied as a function of modulation depth (contrast) of a counterphase sinusoidal grating stimulus. A range of spatial and temporal frequencies of stimulation were used. The contrast functions showed many different forms, and were in some cases nonmonotonic. The binocular response usually had a steeper slope than the monocular response. Extrapolating the slope to the zero intercept gave electrophysiological thresholds which did not correspond with psychophysical threshold at any spatial or temporal frequency used. The binocular response was reduced to the monocular level when the orientation difference between the two eyes exceeded about 20 degrees. The data show that the pattern evoked potential is highly specific to many stimulus variables.
研究了单眼和双眼视觉诱发电位作为反相正弦光栅刺激的调制深度（对比度）的函数。使用了一系列空间和时间频率的刺激。对比度函数呈现出多种不同形式，在某些情况下是非单调的。双眼反应的斜率通常比单眼反应更陡。将斜率外推到零截距得到的电生理阈值在任何使用的空间或时间频率下都与心理物理学阈值不对应。当两只眼睛之间的方向差异超过约20度时，双眼反应降低到单眼水平。数据表明，模式诱发电位对许多刺激变量具有高度特异性。
