On the auto-reference, auto-correlation and adaptive interference cancellation theories and techniques for single extracting flash visual evoked potential / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 1094-1100, 2009.
Article
em Zh
| WPRIM
| ID: wpr-244684
Biblioteca responsável:
WPRO
ABSTRACT
On the basis of analyzing the defects in traditional averaging theory for extracting evoked potential (EP), and by realizing the characteristic of spontaneous electroencephalo-signal (S-EES) as well as the special environment for extracting EP, we propose an auto-reference, auto-correlation, adaptive interference cancellation (AAA-ICT) for use in the single trial of flash visual evoked potential (FVEP). Firstly, the segment of reference signal, which has the best correlation with evoked electroencephalo-signal (E-EES), was obtained using the method for calculating the sliding correlation point by point between E-EES and reference signal; then, the cancellation factor between E-EES and the most correlative reference signal segment was derived by the least square method; at last, the single trial of FVEP was acquired by interference cancellation. By this method, FVEP can be extracted perfectly and the FVEP variability of individual inter-stimulation can be obtained.
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Fisiologia
/
Algoritmos
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Processamento de Sinais Assistido por Computador
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Eletroencefalografia
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Potenciais Evocados Visuais
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Métodos
Limite:
Humans
Idioma:
Zh
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2009
Tipo de documento:
Article