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目的探讨腔隙性脑梗塞（ＬＩ）脑电图（ＥＥＧ）、脑电地形图（ＢＥＡＭ））改变的敏感性、变化特点以及对临床诊断的指导价值。方法对３０例ＬＩ行ＥＥＣ、ＢＥＡＭ及ＣＴ检查，并与梗塞组及正常组比较。结果ＬＩ组ＢＥＡＭ阳性率为７７％，高于ＣＴ（６３％）及ＥＥＧ（４２％）。主要改变为θ频带功率及δ／α、θ／α、δ＋θ／α＋β比值增高，α频带功率降低ＢＥＡＭ异常主要位于额区或顶、中央区。与对照组比较，ＬＩＢＥＡＭ改变具有一定特异性。结论ＢＥＡＭ是诊断ＬＩ较敏感的，并有一定定侧定位作用的监测手段。
Objective To investigate the changes of sensitivity, change and clinical value of lacunar infarction (LI) electroencephalogram (EEG) and electroencephalogram (BEAM). Methods 30 cases of LI line EEC, BEAM and CT examination, and compared with the infarction group and normal group. Results The positive rate of BEAM in LI group was 77%, higher than CT (63%) and EEG (42%). The main changes were θ-band power and δ / α, θ / α, δ + θ / α + β ratio increased, α-band power decreased BEAM anomalies are mainly located in the frontal area or the top and central area. Compared with the control group, LIBEAM changes with a certain specificity. Conclusion BEAM is more sensitive to the diagnosis of LI, and has a certain side-positioning effect monitoring means.