Spontaneous recovery of effects of contrast adaptation without awareness

	Spontaneous recovery of effects of contrast adaptation without awareness
	Mei, Gaoxing 1,2; Dong, Xue 1; Dong, Bo 1; Bao, Min1
摘要	Prolonged exposure to a high contrast stimulus reduces the neural sensitivity to subsequent similar patterns. Recent work has disclosed that contrast adaptation is controlled by multiple mechanisms operating over differing timescales. Adaptation to high contrast for a relatively longer period can be rapidly eliminated by adaptation to a lower contrast (or meanfield in the present study). Such rapid deadaptation presumably causes a short-term mechanism to signal for a sensitivity increase, canceling ongoing signals from long-term mechanisms. Once deadaptation ends, the short-term mechanism rapidly returns to baseline, and the slowly decaying effects in the long-term mechanisms reemerge, allowing the perceptual aftereffects to recover during continued testing. Although this spontaneous recovery effect is considered strong evidence supporting the multiple mechanisms theory, it remains controversial whether the effect is mainly driven by visual memory established during the initial longer-term adaptation period. To resolve this debate, we used a modified Continuous Flash Suppression (CFS) and visual crowding paradigms to render the adapting stimuli invisible, but still observed the spontaneous recovery phenomenon. These results exclude the possibility that spontaneous recovery found in the previous work was merely the consequence of explicit visual memory. Our findings also demonstrate that contrast adaptation, even at the unconscious processing levels, is controlled by multiple mechanisms.
关键词	contrast adaptation spontaneous recovery awareness visual memory visual crowding continuous flash suppression
	2015-09-30
语种	英语
发表期刊	FRONTIERS IN PSYCHOLOGY
ISSN	1664-1078
卷号	6 期号:0 页码:1464
期刊论文类型	Article
收录类别	SSCI
WOS记录号	WOS:000363199200001
引用统计	被引频次：10[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/311026/15270
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.Guizhou Normal Univ, Dept Psychol, Guiyang, Peoples R China
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	Mei, Gaoxing,Dong, Xue,Dong, Bo,et al. Spontaneous recovery of effects of contrast adaptation without awareness[J]. FRONTIERS IN PSYCHOLOGY,2015,6(0):1464.
APA	Mei, Gaoxing,Dong, Xue,Dong, Bo,&Bao, Min.(2015).Spontaneous recovery of effects of contrast adaptation without awareness.FRONTIERS IN PSYCHOLOGY,6(0),1464.
MLA	Mei, Gaoxing,et al."Spontaneous recovery of effects of contrast adaptation without awareness".FRONTIERS IN PSYCHOLOGY 6.0(2015):1464.

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