伴有凶杀行为精神分裂症患者听觉感觉门控P50的随访研究

目的 随访分析伴有凶杀行为的精神分裂症患者听觉感觉门控电位P50的变化.方法 采用条件-测试刺激模式,对25例伴有凶杀行为的精神分裂症患者(患者组)和27名正常对照者(对照组)进行P50检测和比较,经过抗精神病药物治疗3个月后,有11例患者完成了P50随访,同时应用阳性和阴性症状量表(PANSS)评定患者的精神症状.结果 ①与对照组相比,患者组在入组未用药时和随访3个月时的S2-P50波幅均较高(P<0.01),S2/S1比值均较大(P<0.01),S1-S2差值(P<0.05)和100(1-S2/S1)值均较小(P<0.01).患者组P50波幅、潜伏期和P50抑制指标在入组时和3个月时的差异均无统计学意义(P>0.05).②与入组时相比,3个月时患者组PANSS总分、阳性量表分、一般精神病理量表分以及反应缺乏、思维障碍、激活性、偏执、抑郁、攻击等6个症状群得分降低(P<0.05).③患者组在入组时和3个月时S2/S1比值、S1-S2差值和100(1-S2/S1)等P50抑制指标与病程、PANSS各指标均无相关(P>0.05).结论 伴有凶杀行为的精神分裂症患者感觉门控存在异常,且P50抑制指标可能是该人群的素质指标.

Follow-up study on auditory sensory gating P50 in schizophrenia patients with homicide

Objective To investigate the auditory sensory gating P50 in schizophrenia patients with homicide during three months of follow up.Methods Twenty-five patients with schizophrenia patients with homicide and 27 healthy adults matched with age and education level were recruited in the present study.P50 was recorded in twenty-seven normal controls and twenty-five schizophrenia patients at the baseline.P50 was repeatedly recorded in eleven patients who completed the follow-up at three months following antipsychot...