Neural Correlates of Age-related Reduction in Visual Motion Priming

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	Neural Correlates of Age-related Reduction in Visual Motion Priming
	Jiang, Yang 1; Luo, Yue-Jia2,3 ; Parasuraman, Raja 4; YANG JIANG
摘要	Previously we reported that priming of visual motion perception is reduced in older adults compared to younger adults (Jiang, Greenwood, Parasuraman, 1999, Psychology and Aging, 14(4), 619; Jiang, Luo, Parasuraman, 2002b, Neuropsychology, 16(2), 140). To examine the neural mechanisms underlying this age-related effect, event-related brain potentials (ERPs) were recorded during perceptual judgments of motion directions by younger and older adults in two experiments. When judging single-step motion, both younger and older adults evoked significantly larger ERP late positive component (LPC) responses to unambiguous motion compared to LPC responses elicited by ambiguous motion. In contrast, compared to the younger adults, the older adults evoked comparable but delayed ERP responses to single motion steps. In the second experiment the younger and older groups judged the directions of two successive motion-steps (either motion priming or motion reversals). Under short (200-400 ms) stimulus onset asynchrony (SOA), the difference between the ERP responses to priming and reversal conditions was significantly larger for the younger than for the older adults. This study provides the first electrophysiological evidence that brain aging leads to delayed processing of single motion direction and visual motion priming as early as 100 ms in the early visual cortex. Age-related changes in strength and temporal characteristics of neural responses in temporal-parietal regions were particularly pronounced in older adults when successive motion signals are placed closely in time, within 400 ms.; Previously we reported that priming of visual motion perception is reduced in older adults compared to younger adults (Jiang, Greenwood, Parasuraman, 1999, Psychology and Aging, 14(4), 619; Jiang, Luo, Parasuraman, 2002b, Neuropsychology, 16(2), 140). To examine the neural mechanisms underlying this age-related effect, event-related brain potentials (ERPs) were recorded during perceptual judgments of motion directions by younger and older adults in two experiments. When judging single-step motion, both younger and older adults evoked significantly larger ERP late positive component (LPC) responses to unambiguous motion compared to LPC responses elicited by ambiguous motion. In contrast, compared to the younger adults, the older adults evoked comparable but delayed ERP responses to single motion steps. In the second experiment the younger and older groups judged the directions of two successive motion-steps (either motion priming or motion reversals). Under short (200-400 ms) stimulus onset asynchrony (SOA), the difference between the ERP responses to priming and reversal conditions was significantly larger for the younger than for the older adults. This study provides the first electrophysiological evidence that brain aging leads to delayed processing of single motion direction and visual motion priming as early as 100 ms in the early visual cortex. Age-related changes in strength and temporal characteristics of neural responses in temporal-parietal regions were particularly pronounced in older adults when successive motion signals are placed closely in time, within 400 ms.
关键词	Ambiguous motion Age-related difference Bi-stable perception EEG ERP Visual motion priming Motion reversal
学科领域	认知神经科学
	2009
语种	英语
发表期刊	AGING NEUROPSYCHOLOGY AND COGNITION
ISSN	1382-5585
卷号	16 期号:2 页码:164-182
期刊论文类型	Article
收录类别	SSCI
WOS记录号	WOS:000263816100003
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	https://ir.psych.ac.cn/handle/311026/5565
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	YANG JIANG
作者单位	1.Univ Kentucky, Coll Med, Dept Behav Sci, Lexington, KY 40536 USA 2.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China 4.George Mason Univ, Dept Psychol, Fairfax, VA 22030 USA
推荐引用方式 GB/T 7714	Jiang, Yang,Luo, Yue-Jia,Parasuraman, Raja,et al. Neural Correlates of Age-related Reduction in Visual Motion Priming[J]. AGING NEUROPSYCHOLOGY AND COGNITION,2009,16(2):164-182.
APA	Jiang, Yang,Luo, Yue-Jia,Parasuraman, Raja,&YANG JIANG.(2009).Neural Correlates of Age-related Reduction in Visual Motion Priming.AGING NEUROPSYCHOLOGY AND COGNITION,16(2),164-182.
MLA	Jiang, Yang,et al."Neural Correlates of Age-related Reduction in Visual Motion Priming".AGING NEUROPSYCHOLOGY AND COGNITION 16.2(2009):164-182.

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