Interpreting EEG alpha activity

被引：358

作者：

Bazanova, O. M. ^{[1
]}

Vernon, D. ^{[2
]}

机构：

[1] Russian Acad Med Sci, Inst Mol Biol & Biophys, Siberian Branch, Novosibirsk 630117, Russia

[2] Canterbury Christ Church Univ, Dept Appl Social Sci, Canterbury, Kent, England

来源：

NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS | 2014年 / 44卷

关键词：

Individual alpha peak frequency; Individual alpha bandwidth; Alpha amplitude suppression; Spindle-form segments length; Intra-spindle amplitude variability; TISSUE CONDUCTIVITY CHANGES; BLOOD-FLOW VELOCITY; BRAIN OSCILLATIONS; QUANTITATIVE EEG; PHASE RESET; INTERINDIVIDUAL DIFFERENCES; THALAMOCORTICAL NETWORKS; PSYCHOMOTOR PERFORMANCE; FUNCTIONAL-SIGNIFICANCE; NEUROFEEDBACK IMPROVES;

D O I：

10.1016/j.neubiorev.2013.05.007

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

010107 [宗教学]; 030301 [社会学]; 070906 [古生物学及地层学（含古人类学）];

摘要：

Exploring EEG alpha oscillations has generated considerable interest, in particular with regards to the role they play in cognitive, psychomotor, psycho-emotional and physiological aspects of human life. However, there is no clearly agreed upon definition of what constitutes 'alpha activity' or which of the many indices should be used to characterize it. To address these issues this review attempts to delineate EEG alpha-activity, its physical, molecular and morphological nature, and examine the following indices: (1) the individual alpha peak frequency; (2) activation magnitude, as measured by alpha amplitude suppression across the individual alpha bandwidth in response to eyes opening, and (3) alpha "auto-rhythmicity" indices: which include intra-spindle amplitude variability, spindle length and steepness. Throughout, the article offers a number of suggestions regarding the mechanism(s) of alpha activity related to inter and intra-individual variability. In addition, it provides some insights into the various psychophysiological indices of alpha activity and highlights their role in optimal functioning and behavior. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：94 / 110

页数：17

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