正常儿童计算事件相关电位N2双峰波特征与年龄发展的研究

doi:10.11852/zgetbjzz2016-24-03-08

中国儿童保健杂志 ›› 2016, Vol. 24 ›› Issue (3): 249-252.DOI: 10.11852/zgetbjzz2016-24-03-08

正常儿童计算事件相关电位N2双峰波特征与年龄发展的研究

吴婷，董选，郭宁，沈惠娟，李亚民

南通大学附属常州市儿童医院，江苏常州 213003

收稿日期:2015-06-29 发布日期:2016-03-01 出版日期:2016-03-01
通讯作者: 李亚民,E-maillym2003122008@aliyun.com
作者简介:吴婷(1974-)，女，江苏人，副主任医师，本科学历，主要研究方向为儿童神经认知和发展规律。
基金资助:
江苏省科技专项(BL2014037)

Study on normal children's calculating event-related potential about N2 bimodal wave and age's development.

WU Ting,DONG Xuan,GUO Ning,SHEN Hui-juan,LI Ya-min.

Nantong University Affiliated Children's Hospital of Changzhou,Changzhou,Jiangsu 213003,China.

Received:2015-06-29 Online:2016-03-01 Published:2016-03-01
Contact: LI Ya-min,E-mail:lym2003122008@aliyun.com

摘要/Abstract

摘要： 目的通过学龄期正常儿童计算答案判断事件相关电位(ERP)N2的双峰波特征比较，探讨7~12岁儿童数学认知发展规律的神经机制。方法 7~12岁正常儿童119名分6组分别计算判断ERP任务实验，进行N2波幅与面积的分析，N2双峰波形态的比较分析。结果 1)N2波幅(μV):各年龄组内错误答案N2波幅均大于正确答案，7岁(16.5±2.4;12.0±2.6)，8岁(7.5±2.95;11.3±2.25)，9岁(26.7±5.4;20.3±4.96)，10岁(23.4±4.74;18.7±3.59)，11岁(16.2±2.28;11.8±2.42)，12岁(14.8±2.73;10.9±2.86);差异有统计学意义(P<0.05)。组间比较9~10岁组两种答案判断N2波幅与其它年龄组差异有统计学意义(P<0.05)。2)N2波面积(μV·ms):各年龄组内错误答案N2波面积均大于正确答案，差异有统计学意义(P<0.05);组间比较9~10岁组两种答案判断N2波面积与其它年龄组差异有统计学意义(P<0.05)。3)N2双峰波的形态变化:随年龄增长，N2后峰错误答案降低，正确答案升高。结论 ERP-N2波波幅、面积随年龄呈倒U形，这与神经突触发育的广度及脑活动度有关，N2波随年龄增长逐渐发育成熟;大脑处理错误冲突信息与正确非冲突信息时的神经机制不同;数学认知发展呈现非线性过程，9岁是关键期。

关键词: 学龄期儿童, 认知发展, 数学, 事件相关电位, N2双峰波

Abstract: Objective To investigate the neural mechanism of school-age children's mathematical cognitive development law by comparing their calculating answer judgment of event-related potential (ERP) about N2 bimodal wave character. Methods Totally 119 normal children were divided into 6 groups.Their N2 bimodal wave's amplitude,area and waveform were analysed. Results 1)N2 bimodal wave's amplitude (μV):wrong answer's N2 amplitude were greater than the right answer's in each group,7 years old(16.5±2.4;12.0±2.6),8 years old(7.5±2.95;11.3±2.25),9 years old(26.7±5.4;20.3±4.96),10 years old(23.4±4.74;18.7±3.59),11 years old(16.2±2.28;11.8±2.42) and 12 years old(14.8±2.73;10.9±2.86),the differences were statistically significant (P<0.05).Group comparison in 9 and 10 years old between two kinds of answer judgment about N2 bimodal wave's amplitude had statistically significant differences with other age groups (P<0.05).2)N2 bimodal wave's area (μV·ms):wrong answer's N2 area were greater than the right answer's in each group,the differences were statistically significant (P<0.05).Group comparison in 9 and 10 years old between two kinds of answer judgment about N2 bimodal wave's area were different with other age groups,the differences were statistically significant (P<0.05).3)N2 bimodal waveform change:N2 after peak's position of misjudgment decreased with age,while correct judgment was in contrast. Conclusions ERP-N2 bimodal wave amplitude and area are of inverted U-shape along with the age.It's related with the breadth of synapses' development and brain activity.Wrong answer's N2 after peak decreases with the brain development,while the reaction process of the correct answer is opposite.The brain's information processing of conflict and inconflict is different.Mathematical cognitive development's obvious peak appears at 9 years old,maybe it's the critical period of the children's development.Mathematical cognitive development presents the nonlinear process.

Key words: school-age children, cognitive development, mathematics, event-related potential, N2 bimodal wave

中图分类号:

R179

吴婷，董选，郭宁，沈惠娟，李亚民. 正常儿童计算事件相关电位N2双峰波特征与年龄发展的研究[J]. 中国儿童保健杂志, 2016, 24(3): 249-252.

WU Ting,DONG Xuan,GUO Ning,SHEN Hui-juan,LI Ya-min. Study on normal children's calculating event-related potential about N2 bimodal wave and age's development.[J]. journal1, 2016, 24(3): 249-252.

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正常儿童计算事件相关电位N2双峰波特征与年龄发展的研究

Study on normal children's calculating event-related potential about N2 bimodal wave and age's development.

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