Biology – Quantitative Biology – Quantitative Methods
Scientific paper
2006-01-31
International Journal of Modern Physics C (2006)
Biology
Quantitative Biology
Quantitative Methods
5 pages, 6 figures
Scientific paper
10.1142/S0129183106008704
Statistical properties of interbeat intervals cascade are evaluated by considering the joint probability distribution $P(\Delta x_2,\tau_2;\Delta x_1,\tau_1)$ for two interbeat increments $\Delta x_1$ and $\Delta x_2$ of different time scales $\tau_1$ and $\tau_2$. We present evidence that the conditional probability distribution $P(\Delta x_2,\tau_2|\Delta x_1,\tau_1)$ may obey a Chapman-Kolmogorov equation. The corresponding Kramers-Moyal (KM) coefficients are evaluated. It is shown that while the first and second KM coefficients, i.e., the drift and diffusion coefficients, take on well-defined and significant values, the higher-order coefficients in the KM expansion are very small. As a result, the joint probability distributions of the increments in the interbeat intervals obey a Fokker-Planck equation. The method provides a novel technique for distinguishing the two classes of subjects in terms of the drift and diffusion coefficients, which behave differently for two classes of the subjects, namely, healthy subjects and those with congestive heart failure.
Ghasemi Fatemeh
Peinke Joachim
Rahimi Tabar Reza M.
Sahimi Muhammad
No associations
LandOfFree
Statistical Properties of the Interbeat Interval Cascade in Human Subjects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Statistical Properties of the Interbeat Interval Cascade in Human Subjects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical Properties of the Interbeat Interval Cascade in Human Subjects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-354022