Dumenko V N, Kozlov M K, Kurova N S, Cheremushkin E A
Zh Vyssh Nerv Deiat Im I P Pavlova. 2009 Jul-Aug;59(4):389-401.
Power spectra of cortical potentials in the frequency band of 1-60 Hz were estimated in 29 healthy subjects in the states of rest with the open eyes, after listening to instruction, and in prestimulus periods at the stages of forming and testing of the visual cognitive set to facial expression. Comparative assessment of the power spectra in five frequency bands 2-7, 8-13, 14-20, 21-40 and 41-60 Hz revealed a significant decrease in the power for the frequencies of 1-20 Hz and its parallel increase in the band of 21-60 Hz in all the states under study as compared to the state of rest. At all the set stages, interregional differences in the EEG power were the highest in the bands of 1-20 and 41-60 Hz and the lowest in the band of 14-20 Hz. Significant differences between the "plastic" and "rigid" groups in the power dynamics were observed only at the set-testing stage. Thus, in subjects with the plastic set, the power of the gamma-frequency band was more frequently higher than in subjects with the rigid set.
在29名健康受试者中，分别在睁眼休息状态、听取指令后以及在对面部表情视觉认知定势形成和测试阶段的刺激前时期，估计了1-60Hz频段的皮层电位功率谱。对2-7、8-13、14-20、21-40和41-60Hz五个频段的功率谱进行比较评估发现，与休息状态相比，在所研究的所有状态下，1-20Hz频率的功率显著降低，而21-60Hz频段的功率则平行增加。在所有定势阶段，脑电图功率的区域间差异在1-20和41-60Hz频段最高，在14-20Hz频段最低。仅在定势测试阶段观察到“可塑性”和“刚性”组在功率动态方面存在显著差异。因此，在具有可塑性定势的受试者中，γ频段的功率比具有刚性定势的受试者更频繁地更高。
