摘要
目的：分析健康老年人脑电图（ＥＥＧ）和脑电地形图（ＢＥＡＭ）变化规律及特点。方法：对８２５例健康老年人根据不同年龄分三组，进行ＥＥＧ、ＢＥＡＭ描记分析。结果：健康老年人ＥＥＧ主要变化是α节律减慢，θ、δ活动增多，过度换气出现完全或不完全性改变，此变化与年龄相关。脑电地形图主要特点是δ、θ频带能量值增高，且与年龄相关，８０岁以上者变化更明显。结论：ＥＥＧ、ＢＥＡＭ对辅助评价老年人的健康状态，具有重要意义。
Objective:To assess the significance of changes of EEG and BEAM in healthy elders.Methods:825 healthy elders are divided into 3 groups according to their ages.EEG is recorded at rest and in evoking tests,and BEAM is carried out. Results:several types of EEG changes are observed:(1)slow rythm,(2)diffuse or focal slow activity,(3) abnormal EEG is recorded in hyperventilation test in some peoples.The increasedpower values of θ,δ frequency are observed in some brain regions in BEAM of elders. Conclusions:EEG and BEAM are important in assessment of health state of elders.
