A modified oddball paradigm "cross-modal delayed response" and the research on mismatch negativity

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	A modified oddball paradigm "cross-modal delayed response" and the research on mismatch negativity
	Wei, JH ; Chan, TC ; Luo, YJ; Y. J. Luo
摘要	A modified oddball paradigm was developed to facilitate the focus of attention and to minimize target effects on deviant-related components of auditory and visual event-related potentials (ERPs) elicited with long interstimulus intervals. Subjects were required to focus on either the visual or auditory stimulus in each stimulus block. Deviant-related components were obtained by subtracting ERPs of the standard stimulus from that of the deviant stimulus for each modality with each stimulus condition. Results showed that auditory mismatch negativity (MMN) and a visual early deviant related negativity (DRN1) were elicited both when stimuli were attended and unattended. In contrast, N2b and P3 were produced only under the attended condition. In comparison of attended MMN and unattended MMN at three time windows (100-150 ms, 150-200 ms, and 200-250 ms) of MMN zone, different scalp distributions were shown, depending on the time windows. This result suggests that the attended auditory MMN is a mixed wave, consisting of genuine MMN, N2b, and possible P165. The effect of attention on MMN may stem from the contamination of these overlapping components. With the present paradigm, at least three sensory memory traces have to be maintained simultaneously in multiple sensory modalities to support automatic processing.; A modified oddball paradigm was developed to facilitate the focus of attention and to minimize target effects on deviant-related components of auditory and visual event-related potentials (ERPs) elicited with long interstimulus intervals. Subjects were required to focus on either the visual or auditory stimulus in each stimulus block. Deviant-related components were obtained by subtracting ERPs of the standard stimulus from that of the deviant stimulus for each modality with each stimulus condition. Results showed that auditory mismatch negativity (MMN) and a visual early deviant related negativity (DRN1) were elicited both when stimuli were attended and unattended. In contrast, N2b and P3 were produced only under the attended condition. In comparison of attended MMN and unattended MMN at three time windows (100-150 ms, 150-200 ms, and 200-250 ms) of MMN zone, different scalp distributions were shown, depending on the time windows. This result suggests that the attended auditory MMN is a mixed wave, consisting of genuine MMN, N2b, and possible P165. The effect of attention on MMN may stem from the contamination of these overlapping components. With the present paradigm, at least three sensory memory traces have to be maintained simultaneously in multiple sensory modalities to support automatic processing. (C) 2002 Elsevier Science Inc.
关键词	event-related potentials (ERPs) mismatch negativity (MMN) selective attention cross-modal delayed response paradigm
学科领域	认知神经科学
	2002-01-15
语种	英语
发表期刊	BRAIN RESEARCH BULLETIN
ISSN	0361-9230
卷号	57 期号:2 页码:221-230
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS记录号	WOS:000173923300011
引用统计	被引频次：46[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/311026/5127
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Y. J. Luo
作者单位	1.Chinese Acad Sci, Inst Psychol, Lab Mental Hlth, Beijing 100101, Peoples R China 2.Chinese Univ Hong Kong, Sha Tin, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wei, JH,Chan, TC,Luo, YJ,et al. A modified oddball paradigm "cross-modal delayed response" and the research on mismatch negativity[J]. BRAIN RESEARCH BULLETIN,2002,57(2):221-230.
APA	Wei, JH,Chan, TC,Luo, YJ,&Y. J. Luo.(2002).A modified oddball paradigm "cross-modal delayed response" and the research on mismatch negativity.BRAIN RESEARCH BULLETIN,57(2),221-230.
MLA	Wei, JH,et al."A modified oddball paradigm "cross-modal delayed response" and the research on mismatch negativity".BRAIN RESEARCH BULLETIN 57.2(2002):221-230.

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