脑电图α波相干性和功率的不对称性：任务和性别的影响。

Asymmetry in EEG alpha coherence and power: effects of task and sex.

作者信息

Beaumont J G, Mayes A R, Rugg M D

出版信息

Electroencephalogr Clin Neurophysiol. 1978 Sep;45(3):393-401. doi: 10.1016/0013-4694(78)90190-6.

Abstract

Male and female subjects performed two spatial and two verbal tasks while EEG was recorded from right and left temporal and parietal sites. Measures of alpha band power asymmetry, coherence and phase angle were derived. Spatial tasks produced increased coherence within the right hemisphere. Interhemispheric coherence was higher for females, and at parietal than at temporal sites. Power asymmetry effects confirmed previous findings, reflected upon sex differences in cerebral lateralisation and upon strategies associated with functional cerebral organisation for task performance. The relation to performance studies and the value of the method in investigating dynamic functional organisation are discussed.

摘要

男性和女性受试者在进行两项空间任务和两项语言任务的同时，从右侧和左侧颞叶及顶叶部位记录脑电图。得出了阿尔法波段功率不对称性、相干性和相位角的测量值。空间任务使右半球内的相干性增加。女性的半球间相干性更高，且在顶叶部位比在颞叶部位更高。功率不对称效应证实了先前的研究结果，反映了大脑半球侧化的性别差异以及与任务表现的功能性大脑组织相关的策略。讨论了与表现研究的关系以及该方法在研究动态功能组织方面的价值。