Spatial-frequency adaptation and grating discrimination: predictions of a line-element model.
Spatial-frequency adaptation and grating discrimination: predictions of a line-element model.
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空间频率适应和光栅辨别：线元模型的预测。
DOI：
10.1364/josaa.1.001091
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
D. Regan
中科院分区：
文献类型：
--
作者：
H. Wilson;D. Regan
最近的数据表明，空间频率适应对适应频率处的空间频率辨别力影响不大，但在比适应频率高大约一个倍频程的频率处，辨别阈值显着升高。还表明，在与适应方向偏移+/-12.0-15.0度的方向上，适应会产生光栅方向辨别力的升高。在本文中，我们表明这些结果在数量上与空间频率辨别的线元模型的预测（其中一些是在不知道实验结果的情况下做出的）一致。视觉机制的空间频率带宽先前是从掩蔽数据获得的。对于方向辨别预测，线元素模型被推广以纳入空间机制的方向带宽，再次根据掩蔽数据进行估计。
Recent data have shown that spatial-frequency adaptation has little effect on spatial-frequency discrimination at the adapting frequency, but there is a substantial elevation of discrimination thresholds at frequencies about one octave higher than the adapting frequency. It has also been shown that adaptation produces elevations in grating-orientation discrimination at orientations displaced by +/- 12.0-15.0 deg from the adapting orientation. In this paper, we show that these results agree quantitatively with the predictions (some of which were made without knowledge of the experimental results) of a line-element model for spatial-frequency discrimination. Spatial-frequency bandwidths of the visual mechanisms were previously obtained from masking data. For the orientation-discrimination predictions, the line-element model was generalized to incorporate orientation bandwidths for the spatial mechanisms, again estimated from masking data.