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本研究提示双侧刺激法作ＳＥＰ异常检出率（８７％），高于单侧法（７６％），双侧法更适合检测脑叶病灶和小病灶。发现基底节区和顶叶是ＳＥＰ早成分最重要的神经结构，丘脑皮质投射有两条不同的传导途径，故额—顶导联有助于鉴别脑内不同部位病灶，其倾向为基底节区病灶基本为额—顶ＳＥＰ异常，中央沟前病灶多为额ＳＥＰ异常，而中央沟后病灶大多为顶区ＳＥＰ异常。ＳＥＰ早成分异常不但与病灶部位有关，也与深感觉受损有关，病灶大小也影响ＳＥＰ的完整性，纯运动障碍和浅感觉异常可以引起ＳＥＰ晚成分的异常。
This study suggests that the bilateral stimulation method for the detection rate of SEP abnormalities (87%), higher than the unilateral method (76%), bilateral method is more suitable for detection of lobar lesions and small lesions. Found that basal ganglia and parietal lobe are the most important neuro-structures of early components of SEP. There are two different routes of transmission in the thalamic cortex. Therefore, the frontal lead-top lead helps to identify the lesion in different parts of the brain. The tendency is basal ganglia Most of the lesions were frontal-top SEP abnormalities, mostly central frontal lesions for the amount of SEP anomalies, and most of the central ditch for the top of the SEP anomalies. The abnormal early component of SEP is not only related to the lesion site, but also relates to the deep sensory impairment. The lesion size also affects the integrity of SEP. Pure motion disorder and superficial sensory abnormalities can cause abnormalities of late SEP components.