学龄期注意缺陷多动障碍与正常儿童数学认知发展特征的比较研究

被引:7
作者
沈惠娟
陈琳
赵方乔
江凯华
董毓
吴婷
丁立
易阳
董选
机构
[1] 常州,南通大学附属常州儿童医院儿童健康研究中心
关键词
学龄期; 注意缺陷多动障碍; 儿童; 数学认知; 事件相关电位; 发展特征;
D O I
暂无
中图分类号
R749.94 [儿童精神病]; G76 [特殊教育];
学科分类号
040109 [特殊教育学]; 100204 [神经病学];
摘要
目的采用数学任务事件相关电位(ERP), 进行7~12岁注意缺陷多动障碍(ADHD)和正常儿童数学认知发展的比较研究, 探讨其特征及神经机制。方法 ADHD组72例, 正常对照组88名, 按小学低中高年级, 各分3组(7~8岁、9~10岁、11~12岁)。ERP采用20以内计算答案判断任务, 进行Fz导联N1、P2、N2成分波幅与潜伏期的比较分析。结果 (1)纵向比较(三年龄组间):正常组N1、P2及N2波幅均差异有统计学意义[正确答案判断:N1(-3.8±2.1)μV、(-4.3±3.4)μV、(-2.2±2.4)μV;P2(10.6±4.3)μV、(12.6±5.1)μV、(8.5±2.4)μV;N2(-6.5±3.1)μV、(-10.2±4.2)μV、(-6.8±3.4)μV;错误答案判断:N1(-2.8±2.7)μV、(-4.5±3.0)μV、(-2.9±2.5)μV;P2(9.3±5.9)μV、(12.1±5.0)μV、(8.2±3.6)μV;N2(-7.4±3.7)μV、(-11.4±5.5)μV、(-7.7±3.7)μV;均P<0.05];ADHD儿童均差异无统计学意义(均P>0.05)。ADHD及正常组潜伏期均差异无统计学意义(均P>0.05)。(2)横向比较(ADHD与正常儿童间):7~8岁ADHD组正确答案判断N1波幅高于正常组, 差异有统计学意义[(-5.3±2.4)μV、(-3.8±2.1)μV,P<0.05]。ADHD组9~10岁P2、N2波幅均低于正常组, 差异有统计学意义[正确答案判断:P2(9.6±4.4)μV、(12.6±5.1)μV;N2(-8.0±4.3)μV, (-10.2±4.2) μV;错误答案判断:P2(9.6±4.4)μV、(12.1±5.0)μV;N2(-7.9±4.6)μV、(-11.4±5.5)μV;均P<0.05]。ADHD潜伏期均长于正常组, 差异有统计学意义(均P<0.05)。(3)任务间比较(正确答案和错误答案判断):ADHD及正常组波幅均差异无统计学意义(均P>0.05)。11~12岁正常组错误答案N2潜伏期长于正确答案, 差异有统计学意义[(312.9±42.3)ms、(292.2±21.2)ms, P<0.05], ADHD潜伏期差异无统计学意义(P>0.05)。结论 ADHD数学ERP成分发展趋势异于正常儿童, 与额叶发育不良密切相关。不同年龄ADHD认知受损特征不同, 低中年级以反应抑制功能损害为主, 中高年级以冲突监测功能受损比较突出。
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