脑电功率谱及脑电地形图的初步研究——Ⅰ.正常脑电功率谱及脑电地形图分析

THE CLINICAL APPLICATION OF BRAIN ELECTRICAL POWER SPECTRUM AND BEAM-A PRELIMINARY REPORT I The analysis of brain electrical power spectrum and BEAM in normal person

本文分析50例正常人脑电功率谱及,发现正常人脑电百分比功率左右对称性好.其功率均值的阶差≤3级,自前额到枕区,慢波逐渐减少,快波α节律增多,各脑区以α节律为主,过度呼吸对脑电功率谱及BEAM影响不大.随年龄的增长,慢波功率增多,α功率变慢。

BEAM of 50 normal persons were analysised. We found the percentage of power spectral of the left and right corresponding regions was symmetrical, and the difference in the mean value of pcv.er spectral between symmetrical areas is≤3 grades. The percentage of slow wave was decreased, the fast wave was increased from the frontal to occipital region. The background activity of brain was alpha rhythm. BEAM did not affect by hyperventilation. As the age increased,the percentage of slow wave was increased and alpha activity was decreased, but there is on significance