EVALUATION OF EVENT-RELATED DESYNCHRONIZATION (ERD) DURING A RECOGNITION TASK - EFFECT OF ATTENTION

被引：65

作者：

DUJARDIN, K ^{[1
]}

DERAMBURE, P ^{[1
]}

DEFEBVRE, L ^{[1
]}

BOURRIEZ, JL ^{[1
]}

JACQUESSON, JM ^{[1
]}

GUIEU, JD ^{[1
]}

机构：

[1] FAC MED LILLE,PHYSIOL LAB,F-59000 LILLE,FRANCE

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1993年 / 86卷 / 05期

关键词：

EVENT-RELATED DESYNCHRONIZATION; MEMORY; COGNITIVE PROCESSES; BRAIN MAPPING;

D O I：

10.1016/0013-4694(93)90049-2

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Event-related desynchronization (ERD) was studied in 10 subjects during a verbal recognition task. The attentional load of the task varied according to the difficulty to discriminate targets and distractors. The EEG recorded from 29 electrodes was used to compute ERD from 14 source derivations in 125 msec intervals and displayed as spatio-temporal maps. The results show that large brain areas of both hemispheres are significantly activated when the attentional load is high. This cerebral activation pattern is less pronounced when the load is low. ANOVA reveals main effects of attention and time and a significant interaction between attention and time.

引用

页码：353 / 356

页数：4

共 13 条

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