Swift D J, Smith R A
Vision Res. 1982;22(2):235-46. doi: 10.1016/0042-6989(82)90123-7.
The mechanism of spatial-frequency adaptation, and channel-bandwidth estimates derived from adaptation, were examined in a series of three experiments. The first two experiments measured adaptation as a function of both the frequency and modulation of the adapt stimulus. The threshold for producing adaptation at different adapt frequencies is considered to be an action spectrum whose half-amplitude bandwidth is found to lie between 1/3 and 2/3 octave. The third experiment employed a novel adaptation paradigm--varying the adapt contrast until the test grating was no longer perceptible--but the results supported those of the earlier experiments. It is concluded that adaptation is probably due to a fatigue-like mechanism, and that a sensitivity measure of adaptation (action spectrum) is probably a better representation of underlying channel tuning than is the more customary response measure.
在一系列三个实验中，研究了空间频率适应的机制以及从适应中得出的通道带宽估计。前两个实验测量了适应作为适应刺激的频率和调制的函数。在不同适应频率下产生适应的阈值被认为是一个作用光谱，其半幅度带宽在1/3到2/3倍频程之间。第三个实验采用了一种新颖的适应范式——改变适应对比度直到测试光栅不再可察觉——但结果支持了早期实验的结果。得出的结论是，适应可能是由于一种类似疲劳的机制，并且适应的敏感性测量（作用光谱）可能比更常用的反应测量更能代表潜在的通道调谐。
