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[正常人类受试者脑磁图α节律的时空变异性]

[The spatial and temporal variability of the magnetoencephalogram alpha rhythm in the normal human subject].

作者信息

Verkhliutov V M

出版信息

Zh Vyssh Nerv Deiat Im I P Pavlova. 1990 Sep-Oct;40(5):944-50.

PMID:1964341
Abstract

Using one-channel SQUID biomagnetometer alpha rhythm was recorded in five healthy men and eight healthy women. Maps of distribution of maximum values of mean MEG amplitudes were analyzed. Most frequently MEG maxima predominated in the parietal parts of the head. Less frequently they were found in the occipital parts. In single instances they could be found in the posterocentral sections and on the midline. In most cases an amplitude interhemispheric asymmetry of extrema was revealed. In men the mean amplitude of the alpha-rhythm predominated more frequently on the left side and in women--on the right one. The map of distribution of mean amplitudes was stable at least during two weeks. Narrow-band filtration allowed to reveal up to three discrete amplitude modes. At definite frequencies the MEG amplitude was continuously stable during several seconds.

摘要

使用单通道超导量子干涉仪生物磁强计记录了5名健康男性和8名健康女性的α节律。分析了平均脑磁图(MEG)振幅最大值的分布图。脑磁图最大值最常出现在头部的顶叶部分。较少出现在枕叶部分。在个别情况下,它们可出现在中央后区和中线部位。在大多数情况下,揭示了极值的半球间振幅不对称性。在男性中,α节律的平均振幅更常出现在左侧,而在女性中则更常出现在右侧。平均振幅分布图至少在两周内是稳定的。窄带滤波能够揭示多达三种离散的振幅模式。在特定频率下,脑磁图振幅在几秒钟内持续稳定。

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