本研究的目的是通过刺激腕部正中神经的Oddball 实验获得体感事件相关电位(ERP),以分析精神分裂症病人与对照者的P_(300)潜伏期、波幅以及反应时(RT)随检测时间的改变。对象与方法:30例确诊的精神分裂症病人。均为右利;另30例对照者在年龄、性别、利手上均与之匹配。病人组包括16例偏执型和14例非偏执型。Oddball 实验,即用2个电极刺激腕部正中神 The purpose of this study was to obtain somatosensory event-related potentials (ERPs) by Oddball stimulation of the median nerve of the wrist to analyze the P_ (300) latency, amplitude, and response time (RT) of schizophrenic patients and controls over time change. Subjects and Methods: 30 patients with diagnosed schizophrenia. Are right-winded; the other 30 cases of control in the age, gender, benefit hand are matched. The patient group consisted of 16 paranoid and 14 non-paranoid. Oddball experiment, that is, with two electrodes to stimulate the wrist center god