LUMINANCE CONTRAST AND MOTION DETECTION

被引：17

作者：

BOULTON, JC ^{[1
]}

HESS, RF ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,PHYSIOL LAB,CAMBRIDGE CB2 3EG,ENGLAND

来源：

VISION RESEARCH | 1990年 / 30卷 / 01期

基金：

英国惠康基金;

关键词：

Apparent motion; D[!sub]min[!/sub; Detection threshold; Luminance contrast;

D O I：

10.1016/0042-6989(90)90136-9

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Direction discrimination was used to measure the minimum and maximum displacement for the detection of motion (Dmin and Dmax) for abruptly displaced sinewave gratings. This was measured for a range of contrast levels from 2 to 32 times the detection threshold for a range of spatially narrow band stimuli. Performance for Dmin (but not Dmax) was found to deteriorate with an increase in contrast, with the most sensitive values for Dmin obtained at contrast levels of 4-8 times detection threshold. This dependence on luminance contrast is thought to be due to the physiology of the visual system, rather than the physics of the stimulus. © 1990.

引用

页码：175 / 179

页数：5

共 19 条

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