摘要
目的探讨阿尔茨海默病（ａｌｚｈｅｉｍｅｒ′ｓｄｉｓｅａｓｅ，ＡＤ）和老年精神分裂症（ＳＳ）在Ｐ３００中的不同特征。方法收集符合ＤＳＭⅢＲ诊断标准的３９例ＡＤ患者，３４例ＳＳ患者以及４０例正常老年人。使用丹麦仪器以及“听觉靶非靶刺激序列”为诱发事件，完成Ｐ３００检测。结果ＡＤ组Ｐ３００波形有变异，Ｐ３００靶和非靶潜伏期Ｎ１明显前移。Ｐ３００主波Ｐ３平均波幅较ＳＳ组和正常对照分别降低１４％及６０％。ＳＳ组靶和非靶潜伏期Ｎ１、Ｐ２以及靶潜伏期Ｎ２、Ｐ３均明显前移正常老年人组。Ｐ３波平均靶波幅比正常老年人降低５４％。ＡＤ组靶Ｐ３潜伏期虽然也有延迟，但差异无显著性意义。结论Ｐ３００可辅助ＡＤ患者和ＳＳ患者的认知功能评定。
Objective To investigate the value of auditory P 300 in assessing cognitive dysfunctions of aged patients with Alzheimer′s disease(AD) or schizophrenia. Methods An′oddball′ paradigm was used to elicit the auditory P 300 from 39 patients diagnosed as having Alzheimer′s disease according to DSM III R, 34 aged schizophrenics and 40 normally age matched subjects, by using a Dantec Concerto SEEG 16 instrument. Results The variability of P 300 waveform increased in AD patients, who presented reduced N1 latency elicited by frequent stimuli. The P3 amplitude of the AD patients was lowered by 14% compared with that of schizophrenics, and by 60% than compared with that of normal controls. Compared with the normal controls, schizophrenics presented reduced N1, P2, N2 and P3 latencies, and their P3 amplitude was decreased by 54%. Conclusion The auditory P 300 is of value in assessing the cognitive dysfunctions of AD patients and aged schizophrenics.
出处
《中华医学杂志》
CAS
CSCD
北大核心
1998年第6期454-456,共3页
National Medical Journal of China
基金
上海市医学领先专业老年精神医学重点学科资助
