Age-related differences in brain activity during extended continuous word recognition in children
Age-related differences in brain activity during extended continuous word recognition in children
复制标题
儿童长时间连续单词识别过程中大脑活动的年龄相关差异
DOI：
10.1016/j.neuroimage.2009.05.020
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发表时间：
2009
期刊：
影响因子：
5.7
通讯作者：
E. Bruin
中科院分区：
文献类型：
--
作者：
J. W. Strien;J. C. Glimmerveen;Vanessa E. G. Martens;E. Bruin
为考察小学生言语识别记忆的发展情况，采用扩展连续识别任务对36名健康幼儿（8-9岁）和36名健康大幼儿（11-12岁）进行了ERP研究。在一组30个单词中，每个单词随机播放6次，其间穿插一些干扰词。孩子们被要求做出新旧决定。数据分析主要集中在N1、P2、N400和刺激开始后500 ~ 800 ms的后期正性复合体（LPC）的新旧效应（重复1 vs新词）和多次重复效应（重复1 ~ 5）。幼儿在左侧区域表现出较强的P2多重重复效应，其P2振幅随单词重复次数的增加呈线性增加。与年幼的儿童相比，年龄较大的儿童在顶叶区域表现出更强的N400新旧效应。N1和LPC的新旧和重复效应在两个年龄组中相似。相关分析表明，在大龄儿童中，连续识别任务中较大的N400新旧效应与听觉言语学习任务中较好的言语学习有中度相关。在两个年龄组中，多次重复的识别准确度的提高与LPC重复效应相关。P2重复效应和N400新旧效应的年龄差异表明，幼儿全词正字法表征依赖于记忆痕迹的强度，词汇-语义表征随年龄增长而发展。LPC结果表明，回忆在年幼和年长儿童的识别记忆中都起着重要作用。
To examine the development of verbal recognition memory in primary-school children, 36 healthy younger children (8–9 years old) and 36 healthy older children (11–12 years old) participated in an ERP study with an extended continuous recognition task. Each word of a series of 30 words was shown randomly for six times interspersed with distracter words. The children were required to make old versus new decisions. The data analyses focused on old/new effects (repetition 1 vs. new word) and multiple repetition effects (repetitions 1 through 5) for the N1, P2, N400, and the late positive complex (LPC, 500–800 ms after stimulus onset). Younger children exhibited a strong P2 multiple repetition effect across left lateral regions, with P2 amplitudes increasing linearly with the number of word repetitions. Compared to younger children, older children exhibited a much stronger N400 old/new effect across parietal regions. Old/new and repetition effects for N1 and LPC were similar in both age groups. Correlational analysis showed that in older children, larger N400 old/new effects on the continuous recognition task were moderately associated with better verbal learning on an auditory verbal learning task. In both age groups, the gain in recognition accuracy over multiple repetitions correlated with the LPC repetition effect. The age differences in P2 repetition effects and N400 old/new effects suggest that in younger children whole-word orthographic representations are dependent on the strength of the memory trace and that lexical–semantic representations develop with age. The LPC results suggest that recollection plays a substantial role in recognition memory of both younger and older children.
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影响因子：
1.7
作者：
DEHAENE, S
通讯作者：
DEHAENE, S
影响因子：
1.9
作者：
J. Janowsky;A. Shimamura;M. Kritchevsky;L. Squire
通讯作者：
J. Janowsky;A. Shimamura;M. Kritchevsky;L. Squire
影响因子：
14.5
作者：
Olichney, JM;Van Petten, C;Kutas, M
通讯作者：
Kutas, M
影响因子：
3.7
作者：
Misra, M;Holcomb, PJ
通讯作者：
Holcomb, PJ