Analysis of mice heart rate variability obtained through plethysmograph power spectrum

In this work we focus on the measurement of heart rate variability (HRV) from the murine plethysmograph. We check whether the recently proposed heart instantaneous frequency (HIF) idea is a viable tool to assess HRV under normal and the adverse conditions of signal saturation. We also characterize the heart rate variability of unanesthetized and anesthetized mice.