Interactions between flicker thresholds and luminance pedestals

被引：33

作者：

Anderson, AJ ^{[1
]}

Vingrys, AJ ^{[1
]}

机构：

[1] Univ Melbourne, Dept Optometry & Vis Sci, Melbourne, Vic 3010, Australia

来源：

VISION RESEARCH | 2000年 / 40卷 / 19期

关键词：

contrast discrimination functions; light adaptation; luminance pedestal flicker; masking; facilitation;

D O I：

10.1016/S0042-6989(00)00121-8

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

We investigated the interactions between flicker thresholds and luminance pedestals using threshold versus contrast (TvC) and method of constant stimuli paradigms. High amplitude luminance pedestals were found to elevate flicker thresholds, but low amplitude luminance pedestals were unable to reduce flicker thresholds. Luminance pedestals elevated flicker thresholds mon at low temporal frequencies. A simple model based on local light adaptation was able to capture the general form of the TvC functions. Our results suggest that flicker thresholds derived in the presence of a luminance pedestal (luminance-pedestal flicker) may vary from those obtained by modulating about a mean luminance (mean-modulated flicker). (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：2579 / 2588

页数：10

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