Norcia A M, Tyler C W, Hamer R D
Smith-Kettlewell Eye Research Foundation, San Francisco, CA 94115.
Invest Ophthalmol Vis Sci. 1988 Jan;29(1):44-9.
The visual evoked potential (VEP) was used to estimate photopic contrast sensitivity of 10-week-old infants over a wide range of spatial frequencies including the acuity limit. Adult and infant VEP contrast sensitivity was compared for sinusoidal luminance gratings reversed in contrast at 6 Hz. Space-average luminance was 220 cd/m2. Grating contrast was swept from well below the measured thresholds to well above them in 10 sec trials. Contrast thresholds were defined as the zero voltage intercept of the initial rising portion of the VEP amplitude versus contrast function. The VEP contrast sensitivity of 10-week-old infants was close to that of the adults for spatial frequencies below about 1 cycle (c)/deg.
视觉诱发电位（VEP）用于评估10周龄婴儿在包括视力极限在内的广泛空间频率范围内的明视觉对比度敏感度。将成人和婴儿对于在6Hz反转对比度的正弦亮度光栅的VEP对比度敏感度进行比较。空间平均亮度为220cd/m²。在10秒的试验中，光栅对比度从远低于测量阈值扫至远高于阈值。对比度阈值定义为VEP幅度与对比度函数初始上升部分的零电压截距。对于低于约1周/度的空间频率，10周龄婴儿的VEP对比度敏感度与成人相近。
