Accession Number:

ADA522321

Title:

Influence of Progressive Central Hypovolemia on Multifractal Dimension of Cardiac Interbeat Intervals

Descriptive Note:

Corporate Author:

DUKE UNIV DURHAM NC DEPT OF PHYSICS

Report Date:

2010-05-07

Pagination or Media Count:

24.0

Abstract:

We analyzed the heartbeat time series of 12 human subjects exposed to progressive central hypovolemia with lower body negative pressure. Two data processing techniques based on wavelet transforms were used to determine the change in the non-stationary nature of the time series with changing negative pressure. Our results suggest that autonomic neural mechanisms driving cardiac interbeat intervals during central hypovolemia go through various levels of multifractility.

Subject Categories:

  • Theoretical Mathematics
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE