摘要
目的对7～12岁学龄期儿童冲突监测的行为学及事件相关电位（ERP）进行研究，探讨各年龄组儿童冲突监测的发展变化特点。方法7～12岁正常儿童131名，采用持续性操作测试（CVF）任务，对各年龄组儿童行为学和ERP非靶N2波幅进行比较分析。结果1．行为学：随年龄增长，靶刺激的反应时缩短[分别为（533．33±66．65）ms，（523．91±92．96）ms，（468．37±64．13）ms，（461．48±98．31）InS，（457．57±84．05）ms，（405．02±67．90）ms]，击中数增加[分别为（34．87±4．84）个，（37．64±3．54）个，（37．95±2．92）个，（38．67±1．23）个，（39．31±1．08）个，（39．45±1．00）个]，各年龄组比较，差异有统计学意义（P〈0．01）。2．ERP：①非靶N2波幅显著高于靶，差异有统计学意义（F=98．57，P〈0．01）。②非靶N2波幅随年龄增长波幅降低，年龄组间比较，差异有统计学意义（F=5．54，P〈0．01）。结论非靶N2与冲突监测密切相关，行为学和ERP结果均显示年龄发展的变化趋势，8～10岁，12岁是儿童信息加工速度、注意及冲突蛉测认知能力发展的关键期。
Objective The present study aimed to trace the behavior results and event-related potential （ERP） of conflict monitoring from γ - 12 years old to explore the development features of the conflict monitoring. Methods In six groups of 144 children aged from 7 to 12 ,behavior and non-target N2 amplitude were analyzed in continuous performance test （CPT） task. Results I. Behavior results：the reaction time of target stimulus decreased （ （ 533.33 ± 66.65 ） ms, （ 523.91 ± 92.96 ） ms, （ 468.37 ±64.13 ） ms, （ 461.48 ± 98.31 ） ms, （457.57 ± 84.05 ） ms, （405.02 ± 67.90） ms） and the hitting number increased （ （ 34.87 ±4.84 ）, （ 37.64± 3.54 ）, （ 37.95 ± 2.92 ）, （ 38.67±1.23 ） , （ 39.31± 1.08 ）, （ 39.45 ± 1.00） ） as age increased, and the difference was statistically significant （ P〈0.01 ）. 2. ERP： （1）The non-target N2 amplitude was significantly higher than the target,and the difference was statistically significant （F= 98.57, P〈 0.01 ）. （2）The amplitude of non-target N2 amplitude decreased with age,and the difference was statistically significant （F= 5.54, P 〈 0.01 ）. Conclusion The non-target N2 was closely related to the monitoring conflict,and the behavior and ERP results in this study showed the de- velopment trend. 8 - 10 and 12 years old are the critical development period of information processing speed, attention and conflict monitoring function for children.
出处
《中华行为医学与脑科学杂志》
CAS
CSCD
北大核心
2011年第1期22-24,共3页
Chinese Journal of Behavioral Medicine and Brain Science
基金
国家自然科学基金资助项目（30870868）
关键词
学龄期儿童
事件相关电位
行为学
冲突监测
School-age children
Event-related potentials
Behavior
Conflict monitoring
