SPATIAL ARRANGEMENT OF LINE, EDGE AND GRATING DETECTORS REVEALED BY SUBTHRESHOLD SUMMATION
SPATIAL ARRANGEMENT OF LINE, EDGE AND GRATING DETECTORS REVEALED BY SUBTHRESHOLD SUMMATION
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DOI：
10.1016/0042-6989(73)90006-0
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发表时间：
1973-01-01
期刊：
影响因子：
1.8
通讯作者：
KINGSMIT.PE
中科院分区：
文献类型：
--
作者：
KULIKOWSKI, JJ;KINGSMIT.PE
The present psychophysical experiments provide evidence for the existence of a variety of detectors responding optimally to lines, edges or gratings. Their existence is revealed by subthreshold summation measurements in which the effect of a subthreshold background on the contrast threshold of a test stimulus is determined. By suitable choice of test and background patterns, we have studied the sensitivities of the detectors tuned to a variety of patterns (e.g. lines, edges and gratings) to background patterns also consisting of lines, edges or gratings. The analysis of the measurements is shown to be self-consistent in a number of ways; for example, the measured contrast sensitivity of the line detector for gratings of different frequencies may be used to predict the sensitivity of this detector for fine lines as a function of their width and position.
