[原著］高周波脳波ゆらぎ解析の意義 : 皮質下構造の機能評価は果して可能か

概要

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We have investigated the fluctuation analysis of the high frequency EEG by means of human scalp electrodes. We've gotten the following results. 1. The upper limit of frequency of human high frequency EEG is about 1kHz, and the fluctuation analysis revealed that they are composed of two Lorentzians. 2. According to our previous basic animal study, the generator of the initial and the second Lorentz is the cortex, and subcortical structures, respectively. 3. The second Lorentz disappears when the subject falls asleep. 4. High frequency EEGs are expressed by simple equation, namely double Lorentzians which is composed of four parameters. 5. From our recent experiences, the second Loretz reflects the subcortical function. We haven't enough experiences yet, but as so many textbook of EEG teach us that the frequency range of EEG is up to about 100Hz, then our work could be a pioneeringdiscovery.
琉球医学会,Ryukyu Medical Associationの論文