EVENT-RELATED SYNCHRONIZATION (ERS) - AN ELECTROPHYSIOLOGICAL CORRELATE OF CORTICAL AREAS AT REST

被引：783

作者：

PFURTSCHELLER, G ^{[1
]}

机构：

[1] LUDWIG BOLTZMANN INST MED INFORMAT & NEUROINFORMAT,GRAZ,AUSTRIA

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1992年 / 83卷 / 01期

关键词：

ALPHA-ACTIVITY; EEG REACTIVITY; EVENT-RELATED DESYNCHRONIZATION; EVENT-RELATED SYNCHRONIZATION; EEG MAPPING; SLEEP SPINDLES;

D O I：

10.1016/0013-4694(92)90133-3

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Oscillations in the alpha and beta bands can display either an event-related blocking response or an event-related amplitude enhancement. The former is named event-related desynchronization (ERD) and the latter event-related synchronization (ERS). Examples of ERS are localized alpha enhancements in the awake state as well as sigma spindles in sleep and alpha or beta bursts in the comatose state. It was found that alpha band activity can be enhanced over the visual region during a motor task, or during a visual task over the sensorimotor region. This means ERD and ERS can be observed at nearly the same time; both form a spatiotemporal pattern, in which the localization of ERD characterizes cortical areas involved in task-relevant processing, and ERS marks cortical areas at rest or in an idling state.

引用

页码：62 / 69

页数：8

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