CAJ | 학술논문

为了研究双耳差频声刺激影响大脑状态的神经机制,采用功率谱、Lempel-Ziv复杂度(LZC)和基于互信息的脑网络等线性及非线性方法,深入探讨了两种不同模式的双耳差频声刺激(alpha & beta)对脑电的影响规律.13名受试者分别进行了alpha & beta差频刺激,结果表明自发脑电的功率谱并没有发现频率跟随响应效应,LZC也没有显著变化.而脑网络图则能够发现在 alpha 差频刺激下大脑皮层不同区域的信息连接性显著减弱,在 beta 差频声刺激下信息连接性则显著增强.因此,互信息脑网络图可以有效地监测大脑在双耳差频声刺激下的变化,为双耳差频声刺激的生物学效应提供了一种合理的解释.
위료연구쌍이차빈성자격영향대뇌상태적신경궤제,채용공솔보、Lempel-Ziv복잡도(LZC)화기우호신식적뇌망락등선성급비선성방법,심입탐토료량충불동모식적쌍이차빈성자격(alpha & beta)대뇌전적영향규률.13명수시자분별진행료alpha & beta차빈자격,결과표명자발뇌전적공솔보병몰유발현빈솔근수향응효응,LZC야몰유현저변화.이뇌망락도칙능구발현재 alpha 차빈자격하대뇌피층불동구역적신식련접성현저감약,재 beta 차빈성자격하신식련접성칙현저증강.인차,호신식뇌망락도가이유효지감측대뇌재쌍이차빈성자격하적변화,위쌍이차빈성자격적생물학효응제공료일충합리적해석.
In order to study the neural mechanism of brain state induced by binaural beat(BB),linear and nonlinear methods,such as power spectral density,Lempel-Ziv complexity(LZC)and brain network based on cross mutual information were applied to discuss the change of brain under two kinds of BB stimulations(alpha & beta). Thirteen subjects were involved in alpha & beta BB stimulations,and the results showed no frequency following re-sponse(FFR)by PSD of spontaneous electroencephalogram(EEG)and no obvious change by LZC. However,the information transmission among various cortical areas reduced under alpha BB stimulation but enhanced under beta BB stimulation by brain network. Therefore,brain network based on mutual information can effectively monitor the change of cerebral cortex under BB stimulation,which provides a new perspective for biological effects induced by BB stimulation.