Contrast discrimination function: Spatial cuing effects

被引：62

作者：

Solomon, JA ^{[1
]}

Lavie, N ^{[1
]}

Morgan, MJ ^{[1
]}

机构：

[1] UNIV LONDON UNIV COLL,DEPT PSYCHOL,LONDON WC1E 6BT,ENGLAND

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1997年 / 14卷 / 09期

关键词：

D O I：

10.1364/JOSAA.14.002443

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effects of spatial cuing were measured for discriminating between an increment and a decrement on a target's pedestal contrast. Discrimination thresholds measured in the absence of a spatial cue were always higher than corresponding thresholds measured in the presence of a spatial cue, except when pedestal contrast was near zero. Uncued discrimination thresholds rose monotonically with pedestal contrast; cued discrimination thresholds formed a dipper function of pedestal contrast. A spatial-uncertainty model incorporating a nonlinear transducer produced similar results. (C) 1997 Optical Society of America.

引用

页码：2443 / 2448

页数：6

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