机构地区:[1]南通大学附属常州儿童医院儿童健康研究中心,常州213003
出 处:《中华行为医学与脑科学杂志》2016年第8期703-708,共6页Chinese Journal of Behavioral Medicine and Brain Science
基 金:江苏省科技厅临床医学科技专项(BL2014037);常州市科技计划(2014262)
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Objective To compare the differences of the development of mathematical cognitive characteristics between ADHD children and normal children aged from 7 to 12 years old with eventrelated potentials ( ERP ) in the mathematical tasks, and to explore the neural mechanisms and characteristics. Methods ERP and behavioral data of 72 ADHD children and 88 normal children in three groups( 7-8 years old,9-10 years old,11-12 years old) were recorded,and analyzed N1,P2 and N2 components'amplitude and latency of Fz by judging the answers to simple calculation within 20. Results ( 1) Vertical comparative analysis( the three age groups were compared):the differences of N1,P2 and N2 amplitudes in normal groups were considered to be statistically significant (right answer: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;error answer: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;all P〈0.05),while was not significant in ADHD group(all P〉0.05). (2)Horizontal comparative analysis(ADHD group and normal group were compared):N1 amplitude of ADHD group aged from 7 to 8 years old was higher than normal group’ s while judging the right answer((-5.3±2.4)μV,(-3.8±2.1)μV, P〈0.05).P2 and N2 components’ amplitude of ADHD group aged from 9 to 10 years old were lower than of that normal group.(right answer:P2(9.6 ±4.4)μV,(12.6±5.1)μV;N2(-8.0±4.3)μV,(-10.2±4.2)μV;error answer:P2(9.6±4.4)μV,(12.1± 5.0)μV;N2(-7.9±4.6)μV,(-11.4±5.5)μV;all P〈0.05).(3)Comparison of different tasks(the judgement of right and wrong answer):There was no statistically significant difference between ADHD and normal group in amplitude( P〉0.05) . The latent period of the wrong answe
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
分 类 号:R749.94[医药卫生—神经病学与精神病学]
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