TIME FREQUENCY MAPPING OF THE HEART-RATE, BLOOD-PRESSURE AND RESPIRATORY SIGNALS

被引：123
|
作者：
NOVAK, P
NOVAK, V
机构：
[1] UNIV MONTREAL,FAC MED,MONTREAL H4J 1C5,PQ,CANADA
[2] UNIV MONTREAL,HOP SACRE COEUR,RES CTR,MONTREAL H4J 1C5,QUEBEC,CANADA
来源：
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING | 1993年 / 31卷 / 02期
关键词：
AUTONOMIC NERVOUS SYSTEM; BLOOD PRESSURE; CROSS-WIGNER DISTRIBUTION; RESPIRATION; R-R INTERVAL; SPECTRAL ANALYSIS; TIME FREQUENCY MAPPING; WIGNER DISTRIBUTION;
D O I：
10.1007/BF02446667
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The discrete Wigner distribution (DWD) was implemented for the time/frequency mapping of variations of R-R interval, blood pressure and respiratory signals. The smoothed cross-DWD was defined and the modified algorithm for the smoothed auto- and cross-DWD was proposed. Spurious cross-terms were suppressed using a smoothing data window and a Gauss frequency window. The DWD is easy to implement using the FFT algorithm . Examples show that the DWD follows well the instantaneous changes of spectral content of cardiovascular and respiratory signals which characterise the dynamics of autonomic nervous system responses.
引用
收藏
页码：103 / 110
页数：8
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