A statistical technique for measuring synchronism between cortical regions in the EEG during rhythmic stimulation.
IEEE Trans Biomed Eng
; 48(10): 1211-5, 2001 Oct.
Article
em En
| MEDLINE
| ID: mdl-11585047
The coherence function has been widely applied in quantifying the degree of synchronism between electroencephalogram (EEG) signals obtained from different brain regions. However, when applied to investigating synchronization resulting from rhythmic stimulation, misleading results can arise from the high correlation of background EEG activity. We, thus propose a modified measure, which emphasizes the synchronized stimulus responses and reduces the influence of the spontaneous EEG activity. Critical values for this estimator are derived and tested in Monte Carlo simulations. The effectiveness of the method is illustrated on data recorded from 12 young normal subjects during rhythmic photic stimulation.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Processamento de Sinais Assistido por Computador
/
Eletroencefalografia
Tipo de estudo:
Health_economic_evaluation
Limite:
Adolescent
/
Child
/
Humans
Idioma:
En
Revista:
IEEE Trans Biomed Eng
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Estados Unidos