The time course of contrast adaptation measured with a new method: Detection of ramped contrast

	The time course of contrast adaptation measured with a new method: Detection of ramped contrast
	Dong, Xue 1; Engel, Stephen A.2; Bao, Min1
摘要	The present study introduces a new method to measure contrast detection thresholds before and after adaptation to contrast. A sinusoidal testing grating increased contrast at a constant rate from an initial subthreshold level. Subjects indicated when the grating was just visible, which terminated its presentation. The stimulus contrast at the time of response was taken as a measure of relative threshold. We used the method to measure the time courses of changes in threshold following adaptation, for several adapting contrasts (9, 19, 29, or 39 dB, ref. 1%) and adapting durations (10, 100, or 1000 s). The buildup and decay of adaptation to contrast was described well by a power function of time. These results agree with previous findings, but are more efficient in terms of subject time. This method promises to be a useful tool for studying the dynamics of adaptation to spatial contrast.
关键词	contrast adaptation ramp detection
	2014
语种	英语
发表期刊	PERCEPTION
ISSN	0301-0066
卷号	43 期号:5 页码:427-437
期刊论文类型	Article
收录类别	SSCI
WOS记录号	WOS:000339229800006
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/14162
专题	中国科学院行为科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China 2.Univ Minnesota, Dept Psychol, Minneapolis, MN 55455 USA
第一作者单位	中国科学院行为科学重点实验室
推荐引用方式 GB/T 7714	Dong, Xue,Engel, Stephen A.,Bao, Min. The time course of contrast adaptation measured with a new method: Detection of ramped contrast[J]. PERCEPTION,2014,43(5):427-437.
APA	Dong, Xue,Engel, Stephen A.,&Bao, Min.(2014).The time course of contrast adaptation measured with a new method: Detection of ramped contrast.PERCEPTION,43(5),427-437.
MLA	Dong, Xue,et al."The time course of contrast adaptation measured with a new method: Detection of ramped contrast".PERCEPTION 43.5(2014):427-437.

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