慢性酒精中毒患者认知功能与事件相关电位研究

目的 探讨慢性酒精中毒患者的认知功能和事件相关电位(ERP)的变化,并评价ERP(P300)在认知功能障碍测评中的应用.方法 对100例慢性酒精中毒患者和70名正常对照进行韦氏成人智力量表、韦氏记忆测验中文版测评和ERP检测.结果 慢性酒精中毒患者的言语智商(90.77±15.34)分]、操作智商(91.72±15.30)分]、总智商(91.05±19.73)分]、Stroop-C时间(173.81±12.35)s]、Stroop-CW时间(1176.21±40.92)s]、逻辑记忆测验(10.32±3.39)s]、视觉再生测验成绩低于对照组(P<0.05,P＜0.01).慢性酒精中毒患者ERP的P3a、P3b波的潜伏期延长,波幅降低,与对照组比较差异有显著性(P<0.01).慢性酒精中毒患者智力测验的智力障碍检出率43%,明显低于ERP的检出率56%(χ2＝7.17,P<0.01).结论 慢性酒精中毒患者的认知功能受到损害.P300变化在发现认知功能损害方面比智力测查更敏感.

A study on cognitive function and event related potential in chronic alcoholism patients

Objective To evaluate cognitive function of chronic alcoholism patients.Methods The Wechsler Adult Intelligence Scale-Revise in China(WAIS-RC) and WMS-RC,including intelligence quotient,logical Memory.visual memory and stroop test,were investigated and P300 component of auditory event-related potential (ERP,P300),especially the subcomponents P3a and P3b were examined in 100 chronic alcoholism patients,and 70 healthv people matched in age,sex and educational level as controls.Results Compared with controls,the score of Verbal intelligence quotient(VIQ),Performance intelligence quotient (PIQ),Full-scale intelligence quotient (FIQ),logical memory,visual memory (immediate and delayed),and stroop test were significant lower (P <0.05.P＜O.01)in chronic alcoholism patients,but the latencies of P3a and P3b wave were significantly prolonged.the amplitude of P3a and P3b wave were significantly decreased in chronic alcoholism patients.Conclusion Chronic alcoholism patients have cognitive function impairment,and P300 is a more sensitive to discover the impairment of the cognitive function.