空间频率自适应的局部效应。

Journal of the Optical Society of America Pub Date : 1982-07-01 DOI:10.1364/josa.72.000878

D W Williams, H R Wilson, J D Cowan

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引用次数: 33

摘要

利用具有带通傅里叶变换的局域化非周期测试图测量了空间频率自适应的空间局域化阈值-提升后效应。在给定的视网膜位置，阈值-仰角曲线与具有中心-环绕灵敏度剖面的尺寸旋转机构的疲劳一致。只需要几个不同尺寸的这种机构就可以满足局部结果。局部后效也被测量为中央凹附近偏心的函数。结果表明，空间频率自适应的阈值-高程后效应在空间上不均匀。

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Localized effects of spatial frequency adaptation.

The spatially localized threshold-elevation aftereffect of spatial-frequency adaptation was measured by using localized, aperiodic test patterns that have bandpass Fourier transforms. At a given retinal location, the threshold-elevation curves are consistent with the fatigue of size-turned mechanisms with center-surround sensitivity profile. Only a few different sizes of such mechanisms were required to fit the local results. The local aftereffect was also measured as a function of eccentricity near the fovea. The results indicate that the threshold-elevation aftereffect of spatial-frequency adaptation is not spatially homogeneous.

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来源期刊

Journal of the Optical Society of America

自引率

0.00%

发文量

期刊介绍： OSA was published by The Optical Society from January 1917 to December 1983 before dividing into JOSA A: Optics and Image Science and JOSA B: Optical Physics in 1984.