VENTRICULAR LATE POTENTIALS CHARACTERIZATION IN TIME-FREQUENCY DOMAIN BY MEANS OF A WAVELET TRANSFORM

被引：64

作者：

MESTE, O

RIX, H

CAMINAL, P

THAKOR, NV

机构：

[1] UNIV POLITECN CATALUNYA,DEPT CONTROL ENGN,BARCELONA 28,SPAIN

[2] UNIV POLITECN CATALUNYA,CSIC,INST CYBERNET,DIV BIOMED ENGN,BARCELONA,SPAIN

[3] JOHNS HOPKINS UNIV,SCH MED,DEPT BIOMED ENGN,BALTIMORE,MD 21205

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1994年 / 41卷 / 07期

关键词：

D O I：

10.1109/10.301729

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The main transforms of Cohen's class allow signal representation simultaneously in time and frequency domains. Wavelet transforms make it possible to link the temporal window width to the analyzing frequency and leads to a ''modified wavelet transform'' which improves resolution both in time and frequency. A simulation study illustrates the artifacts of every time-frequency representation (TFR) on pure sinusoids and gives performance evaluation of the different methods when searching a sinusoid embedded in a QRS complex. Analyses of real signals from healthy and pathological subjects confirm the simulation results and complete the characterization of ventricular late potentials (VLP) yet detected by signal averaging.

引用

页码：625 / 634

页数：10

共 23 条

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