Timing in the baby brain

被引：70

作者：

Brannon, EM ^{[1
]}

Roussel, LW ^{[1
]}

Meck, WH ^{[1
]}

Woldorff, M ^{[1
]}

机构：

[1] Duke Univ, Ctr Cognit Neurosci, Durham, NC 27708 USA

来源：

COGNITIVE BRAIN RESEARCH | 2004年 / 21卷 / 02期

关键词：

timing; mismatch negativity; development; event-related-potential;

D O I：

10.1016/j.cogbrainres.2004.04.007

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Ten-month-old infants and adults were tested in an auditory oddball paradigm in which 50-ms tones were separated by 1500 ms (standard interval) and occasionally 500 ms (deviant interval). Both infants and adults showed marked brain responses to the tone that followed a deviant inter-stimulus interval (ISI). Specifically, the timing-deviance event-related-potential (ERP) difference waves (deviant-ISI ERP minus standard-ISI ERP) yielded a significant, fronto-centrally distributed, mismatch negativity (MMN) in the latency range of 120-240 ms post-stimulus for infants and 110-210 ms for adults. A robust, longer latency, deviance-related positivity was also obtained for infants (330-520 ms), with a much smaller and later deviance-related positivity observed for adults (585-705 ms). These results suggest that the 10-month-old infant brain has already developed some of the same mechanisms as adults for detecting deviations in the timing of stimulus events. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：227 / 233

页数：7

共 30 条

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