Sclar G, Lennie P, DePriest D D
Department of Psychology, University of Rochester, NY 14627.
Vision Res. 1989;29(7):747-55. doi: 10.1016/0042-6989(89)90087-4.
We have characterized the contrast-response relationships for simple and complex cells in striate cortex of macaque monkey, before and during adaptation to high-contrast sinusoidal gratings of the optimal spatial-frequency and orientation. Adaptation brings about systematic changes in the steepness of contrast-response curves and in the effective contrast of stimuli. Adaptation reduces the detectability of low-contrast gratings by almost a factor of three, but by extending the operating range of most cells it appears to improve the discriminability of high-contrast stimuli that previously gave rise to responses of saturating amplitude.
我们已经描绘了猕猴纹状皮层中简单细胞和复杂细胞在适应最佳空间频率和方向的高对比度正弦光栅之前和期间的对比度-反应关系。适应会使对比度-反应曲线的陡度以及刺激的有效对比度发生系统性变化。适应使低对比度光栅的可检测性降低了近三倍，但通过扩展大多数细胞的工作范围，它似乎提高了先前引起饱和幅度反应的高对比度刺激的可辨别性。
