scholarly journals Power Spectral Analysis of Heart Rate Variability for Assessment of Diurnal Variation of Autonomic Nervous Activity in Guinea Pigs.

2002 ◽  
Vol 51 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Megumi AKITA ◽  
Keiji ISHII ◽  
Masayoshi KUWAHARA ◽  
Hirokazu TSUBONE
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Diurnal Variation ◽  
Guinea Pigs ◽  
Nervous Activity ◽  
Power Spectral Analysis ◽  
Autonomic Nervous Activity ◽  
Autonomic Nervous ◽  
Power Spectral

CHANGES IN AUTONOMIC NERVOUS ACTIVITY DURING COLONOSCOPY USING SPECTRAL ANALYSIS OF HEART RATE VARIABILITY

2000 ◽  
Vol 12 (2) ◽  
pp. 155-161 ◽  
Author(s):  
Kazuhiro Tezuka ◽  
Masahiro Nomura ◽  
Ken Saito ◽  
Yoshikazu Takeuchi ◽  
Ryusuke Torisu ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Nervous Activity ◽  
Autonomic Nervous Activity ◽  
Autonomic Nervous

Autonomic nervous function in mice and voles (Microtus arvalis): investigation by power spectral analysis of heart rate variability

1996 ◽  
Vol 30 (4) ◽  
pp. 359-364 ◽  
Author(s):  
K. Ishii ◽  
M. Kuwahara ◽  
H. Tsubone ◽  
S. Sugano
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Power Spectra ◽  
Power Spectral Analysis ◽  
Microtus Arvalis ◽  
Autonomic Nervous Function ◽  
Autonomic Nervous ◽  
Power Spectral ◽  
Nervous Function

We have studied the autonomic nervous function in voles ( Microtus arvalis) and mice. For this purpose, ECGs were recorded from conscious and unrestrained voles and mice using radiotelemetry and the autonomic nervous function was investigated by the power spectral analysis of heart rate variability. Heart rate in voles was lower than mice and the coefficient of variance was larger in voles. In the power spectra of voles and mice, there were two major spectral components with the high frequency (HF) peak generally appearing between 2.0 and 4.0 Hz, and the low frequency (LF) peak appearing below 0.6 Hz. On the basis of this data, we set the two frequency bands as LF (0.1-1.0 Hz) and HF (1.0-5.0 Hz) to evaluate autonomic nervous function. The LF and HF powers were larger in voles than mice. The LF/HF ratio was thought to provide a convenient index of autonomic nervous balance and was smaller in voles than mice. The LF powers in both species were reduced by atropine, but propranolol reduced the LF power only in mice. The HF power was reduced by atropine only in voles. The intrinsic heart rate produced by a double blockade with atropine and propranolol in voles was almost the same as control levels, but in mice was lower than controls. The ratio of the LF and HF powers by a double blockade were almost the same as those of the administration of atropine in voles, but nearer to propranolol in mice. These results suggested that the parasympathetic nervous function was predominant in voles, but the sympathetic one was predominant in mice.

Assessment of autonomic nervous function by power spectral analysis of heart rate variability in the horse

1996 ◽  
Vol 60 (1-2) ◽  
pp. 43-48 ◽  
Author(s):  
Masayoshi Kuwahara ◽  
Shin-ichi Hashimoto ◽  
Keiji Ishii ◽  
Yukihiro Yagi ◽  
Tetsuro Hada ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Spectral Analysis ◽  
Power Spectral Analysis ◽  
Autonomic Nervous Function ◽  
Autonomic Nervous ◽  
Power Spectral ◽  
Nervous Function
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