Integrative analysis of intracranial pressure and R-R interval signals: a study of ICP B-wave using causal coherence

Conf Proc IEEE Eng Med Biol Soc. 2006:2006:464-7. doi: 10.1109/IEMBS.2006.260755.

Abstract

Causal coherence analysis was applied to beat-to-beat mean intracranial pressure (ICP) and RR interval signals that were recorded from twelve normal pressure hydrocephalus patients. Data were organized into two groups including an ICP B-Wave group and a control baseline group. Maximal classic coherence between ICP and RR interval within [0.04-0.15] Hz was found to be significantly greater than zero for both B-wave and control groups. Causal coherence analysis further revealed that feedforward coherence due to RR interval's effect on ICP always exists for both B-wave and baseline ICP state while feedback coherence from ICP to RR interval was enhanced during the occurrence of B-wave.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Algorithms*
  • Biological Clocks / physiology*
  • Computer Simulation
  • Data Interpretation, Statistical
  • Heart Rate / physiology*
  • Humans
  • Intracranial Pressure / physiology*
  • Models, Biological*
  • Models, Statistical
  • Regression Analysis
  • Systems Integration