Hayhoe M M, Benimoff N I, Hood D C
Center for Visual Science, University of Rochester, NY 14627.
Vision Res. 1987;27(11):1981-96. doi: 10.1016/0042-6989(87)90062-9.
This paper examines, for foveal cone vision, the processes which mediate the transition to a steady state of adaptation following a change of illumination. In the steady state, the signal from an adapting field is attenuated not only by a multiplicative factor (reduction in gain) but also by a subtractive signal. We show that the multiplicative change is accomplished very rapidly following the onset of an adapting field (within about 50 msec). Much of the subtractive change is also accomplished rapidly, but it takes several sec to complete. At the offset of the field, the multiplicative process takes over 200 msec to recover. This slower time-course at offset may be a consequence of receptoral persistence.
本文研究了中央凹视锥视觉中，光照变化后介导向适应稳态转变的过程。在稳态下，来自适应场的信号不仅通过一个乘法因子（增益降低）衰减，还通过一个减法信号衰减。我们表明，乘法变化在适应场开始后非常迅速地完成（在约50毫秒内）。大部分减法变化也迅速完成，但需要几秒钟才能完成。在场消失时，乘法过程需要200多毫秒才能恢复。这种在消失时较慢的时间进程可能是感受器持续性的结果。
