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美沙酮维持治疗患者执行控制加工的事件相关电位研究 被引量:2

Executive control for methadone maintenance patients:an event-related potential study
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摘要 目的 探讨处于美沙酮维持治疗患者(methadone maintenance treatment patient,MMP)执行功能的电生理特征.方法 采用事件相关电位(event-related potential,ERP)技术对比30例MMP和27例健康成年人在经典色-词Stroop任务中大脑皮层时程的动态变化.结果 (1)Stroop实验测试结果:两组被试的行为结果均有显著的Stroop干扰效应[反应时:对照组一致条件(766.57±75.64) ms,不一致条件(879.52±62.31) ms,MMP组一致条件(821.89±64.44) ms,不一致条件(906.29±69.46) ms,均差异有统计学意义(P<0.001);错误率:对照组一致条件(4.15±2.92)%,不一致条件(8.70±6.12)%,差异有统计学意义(P<0.001),MMP组一致条件(12.07±10.80)%,不一致条件(16.60±12.43)%,差异有统计学意义(P<0.01)].(2)Stroop实验ERP结果:MMP的N2和N450不一致条件波幅[N2(1.40±2.91) μV、N450(1.29±0.55) μV]大于一致条件波幅[N2(0.77±3.61) μV、N450(0.83±1.07) μV],均差异有统计学意义(P<0.05),而SP波幅(0.37±3.58) μV则小于于一致条件波幅(1.53±3.05) μv,差异有统计学意义(P<0.001);对照组N2不一致条件波幅[(-0.30±3.45)μV、N450(1.77± 1.55) μV]显著小于一致条件[N2(1.10±3.64) μV,P<0.001;N450(2.37±2.12) μV,P<0.05],SP波幅(1.93±1.65) μV显著大于一致条件(0.98±2.02) μV,差异有统计学意义(P<0.01).结论 MMP存在执行控制障碍,表现为早期冲突监控过程异常与晚期反应冲突加工异常,这为解释MMP的复吸行为提供了神经电生理证据. Objective To discuss the neuropsychological mechanism of executive control for methadone maintenance patients(MMP). Methods Using the event-related potentials (ERPs) technique to reveal the time course of information processes with high temporal resolution, and exam the function of attention monitoring and re- sponse inhibition in heroin-dependent MMP. Results ( 1 ) The behavioral results : there were significant within- subjects Stroop interference effects for the MMP and control groups( reaction time:control group's congruent condi- tion(766.57±75.64) ms, incongruent condition ( 879.52±62.31 ) ms, MMP group' s congruent condition ( 821.89± 64.44) ms, incongruent condition ( 906.29 ± 69.46 ) ms, P〈 0.001 ; error rate : control group' s congruent condition (4.15±2.92) %, incongruent condition( 8.70±6.12)%, P〈0.001, MMP group' s congruent condition ( 12.07± 10.80) %, incongruent condition ( 16.60± 12.43) %, P〈0.01 ). (2) ERPs data showed that MMP demonstrated sig- nificantly smaller incongruent-N2/N450/SP amplitudes than controls, and all disappearing incongruent effects in N2,N450 and SP,comparing statistically significant incongruent effects for controls in N2,N450 and SP. In MMP group, the amplitudes of N2 and N450 incongruent condition ( N2 ( 1.40± 2.91 ) μV, N450 ( 1.29± 0.55 ) μV ) were bigger than congruent condition amplitudes ( N2 ( 0.77±3.61 ) μV ,N450( 0.83± 1.07 ) μV, P〈0.05 ), but the ampli- tude of SP (0.37±3.58) μV was smaller than congruent condition(1.53±3.05) μV, P〈0.001 ;in control group,the amplitudes of N2 and N450 incongruent condition ( ( - 0.30± 3.,$5 ) μV, N450 ( 1.77± 1.55 ) μV ) were smaller than congruent condition ( N2 ( 1.10 ± 3.64 ) μV, P〈 0.001 ; N450 ( 2.37 ± 2.12 )μV, P〈 0.05 ), the amplitude of SP ( (1.93±1.65) p,V) was bigger than congruent condition((0.98±2.02) p.V, P〈0.01). Conclusion There are im- paired executive control functions during the conflict monitoring process and the conflict resolution process for MMP. These results provide the neural electrophysiological evidence to explain relapse behaviors in methadone ma- intenance patients.
出处 《中华行为医学与脑科学杂志》 CAS CSCD 北大核心 2014年第3期218-221,共4页 Chinese Journal of Behavioral Medicine and Brain Science
基金 巴渝学者人才项目资助(2010-2014)
关键词 美沙酮维持治疗患者 STROOP效应 执行控制 事件相关电位 Methadone maintenance patients Stroop effect Executive control Event-related po-tentials
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