稳定期慢性精神分裂症患者听觉感觉门控诱发电位P50特点  被引量:8

P50 auditory sensory gating in inpatients with stable chronic schizophrenia

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作  者:王东[1,2] 朱孔美[1,2] 谭淑平[2] 邹义壮[2] 王健[2] 李详红[2] 杨甫德[2] 张进国[2] 李东[2] 周东丰[3] 张岿 

机构地区:[1]威海市精神卫生中心,山东威海264205 [2]北京回龙观医院,北京100096 [3]北京大学精神卫生研究所卫生部精神卫生学重点实验室(北京大学),北京100191

出  处:《中国心理卫生杂志》2011年第7期556-560,共5页Chinese Mental Health Journal

基  金:北京市科委重大项目资助专项(D0906001000091);北京市优秀人才基金(2007id0301400101)

摘  要:目的:探讨慢性精神分裂症患者稳定期感觉门控指标P50的特点。方法:选取137例符合美国精神障碍诊断与统计手册第4版(DSM—IV)诊断标准的稳定期慢性精神分裂症住院患者(患者组)和153例年龄匹配的健康成年人(对照组),采用条件一测试刺激模式记录脑电信号并进行离线分析,测量P50的波幅和潜伏期进行统计分析。同时使用阳性和阴性症状量表(PANSS)评定患者的临床症状。结果:患者组s1波幅(S1V)低于对照组,S1潜伏期(S1L)比对照组延长;患者组S2-P50与S1-P50波幅的比值(S2/S1)高于对照组,患者组S1-P50与S2-P50波幅差(S1—S2)以及100(1-S2/S1)低于对照组(P〈0.05)。患者组PANSS评分、病程、服用药物剂量和P50各项指标无相关性(r=-0.15~0.13,P〉0.05),精神分裂症不同临床亚型(偏执型和非偏执型)之间P50各项指标差异无统计学意义(均P〉0.05)。结论:慢性精神分裂症患者稳定期存在P50抑制功能减弱,与临床症状和疾病分型无明显相关。Objective: To explore'the characteristics of P50 in stable patients with chronic schizophrenia. Methods: The study involved 137 chronic schizophrenics (SCH) and 153 normal controls (NC). P50 was measured using the conditioning/testing paradigm presented with auditory double clicks stimuli. The symptoms were assessed with the Positive and Negative Syndrome Scale (PANSS). Results: The chronic schizophrenia demonstrated lower S1 amplitude [(3.24 ± 1.77) uV vs. (3.87 ± 2.04) uV], longer S1 latency [ (57 ± 9) ms vs. (55 ±7) ms] and higher S2/S1 ratio [(0.52 ±0. 53) vs. (0. 39 ±0. 380] than normal controls (Ps 〈0. 05). The chronic schizophrenia showed lower S1-S2 amplitude [(1.72 ± 1.88) uV vs. (2. 36 ± 1.75) uV] and lower 100( 1- S2/S1) ratio [(0.48 ±0. 53) vs. (0. 61 ±0. 38)] than normal controls. No significant correlations were found between S2/S1 ratio, S1-S2 ampitude, 100 (1-S2/S1) and PANSS scores, duration of disease, or dosage of drugs ( r = -0. 15 -0.13, P 〉0. 05). There were no significant difference of S2/S1 ratio, S1-S2, and (1-S2V/S1V) between paranoid schizophrenics and non-paranoid schizophrenics (Ps 〉 0. 05). Conclusion: The results indicate that chronic schizophrenics in stable condition have sensory gating deficit. There is no correlation between sensory gating deficits and clinical symptoms and subtype of to deficiency of inhibition.

关 键 词:精神分裂症 感觉门控 事件相关电位 P50 横断面研究 

分 类 号:R749.3[医药卫生—神经病学与精神病学]

 

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