Isaĭchev S A, Dereviankin V T, Koptelov Iu M, Sokolov E N
Lomonosov State University, Moscow.
Zh Vyssh Nerv Deiat Im I P Pavlova. 1999 Nov-Dec;49(6):919-25.
An attempt to localize brain mechanisms of the rhythmic activity in the alpha-rhythm range was made using the equivalent dipole model. It is known that light flickering stimuli with the frequency close to that of the individual alpha rhythm induce an increase in its spectral power ("photic-driving" phenomenon). It was shown that the activity of the neuronal structures generating the alpha rhythm can be identified by specific frequency of the light stimulation and localized by means of construction of dipole models. Two sources of the alpha rhythm in the narrow-frequency bands with the maximal resonance responses in the frequencies of 10.1 and 10.5 Hz were localized in the thalamic structures.
利用等效偶极子模型尝试定位大脑中阿尔法节律范围内节律性活动的机制。众所周知，频率接近个体阿尔法节律的光闪烁刺激会导致其频谱功率增加（“光驱动”现象）。研究表明，产生阿尔法节律的神经元结构的活动可以通过光刺激的特定频率来识别，并通过构建偶极子模型进行定位。在丘脑结构中定位到了窄频带内阿尔法节律的两个来源，其在10.1和10.5赫兹频率处具有最大共振响应。
