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The central mechanism of the high frequency component in heart rate variability in rat

Abstract

Experiments were performed on 15 Sprague-Dawley rats to detect the effect of artificial ventilation of different frequencies on the high frequency component of heart rate variability (HBV) by autoregressive modeling with Burg algorithm. With continuous or intermittent electrical stimulation, different patterns of regulating activity of nucleus ambiguus in medulla on HRV were observed. Fast Fourier transform was used to analyze the coherence between neuronal discharge with respiratory rhythm in rostral ventrolateral medulla (rVLM) and HRV.

Key words: Rat;Heart rate variability;Neurongl discharge variability;Nucleus ambiguus; Spectral analysis;Rostral ventrolateral medulla

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Citing This Article：

. The central mechanism of the high frequency component in heart rate variability in rat. Acta Physiol Sin 1998; 50 (4): (in Chinese with English abstract).