Instantaneous energy spectrum analysis for frequency following response of speech evoked brainstem response / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 337-364, 2012.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-271778
Biblioteca responsável:
WPRO
ABSTRACT
Speech evoked brainstem responses (s-ABRs) elicited by a speech syllable /da/ are composed of four parts onset response (OR), transitional response, frequency following response (FFR) and offset response. FFR elicited by periodic events behaves like a quasi-periodic waveform corresponding to the stimulus sounds. The fast Fourier transform based spectra are commonly used to exam the characteristics of s-ABR in practice, which is, however, unable to trace the occurrence of the main components of s-ABR. The FFR is usually not obvious in the original individual s-ABR waveform. In this paper, we proposed a novel approach to observe the FFR by an instantaneous energy spectrum performed on the intrinsic mode functions (IMFs) after empirical mode decomposition (EMD) of the s-ABR. We demonstrated that the FFR is most pronounced on the second layer of IMFs. This finding suggests a new way which may be available to characterize and to detect the FFR better. This will benefit the clinic applications of s-ABRs.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Fala
/
Percepção da Fala
/
Tronco Encefálico
/
Potenciais Evocados Auditivos do Tronco Encefálico
/
Análise de Fourier
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2012
Tipo de documento:
Artigo