Levi D M, Harwerth R S
Invest Ophthalmol Vis Sci. 1977 Jan;16(1):90-5.
Contrast sensitivity functions for sinusoidal gratings of different spatial frequencies and stimulus durations have been determined for both eyes of amblyopic subjects. For both long and short stimulus durations, the entire contrast sensitivity function of the amblyopic eyes is lower than that of the nonamblyopic eyes. When the gratings were flickered at 10 Hz, the sensitivity for pattern and flicker detection were similar for both eyes at low spatial frequencies. Possible neural mechanisms for the differences in contrast sensitivity are considered with respect to recent psychophysical and electrophysiological evidence for channels with different spatio-temporal properties in the mammalian visual system.
已经测定了弱视受试者双眼对于不同空间频率和刺激持续时间的正弦光栅的对比敏感度函数。对于长和短的刺激持续时间，弱视眼的整个对比敏感度函数均低于非弱视眼。当光栅以10赫兹闪烁时，在低空间频率下，双眼对于图案和闪烁检测的敏感度相似。结合哺乳动物视觉系统中具有不同时空特性的通道的最新心理物理学和电生理学证据，考虑了对比敏感度差异的可能神经机制。
