Study on partial correlations between linear and nonlinear measures of heart rate variability

• Grant number: 10/09921-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2010
• End date: December 31, 2011
• Field of knowledge: Engineering - Biomedical Engineering - Bioengineering
• Principal Investigator: Luiz Otavio Murta Junior
• Grantee: Mauro Guilherme Guzo
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

This project aims to investigate correlations between linear and nonlinear measures of heart rate variability assessment in the context of pathological conditions. Initially, a review of widely adopted methods in such an analysis provides the starting conditions for the deepening of its properties and to the search for relevant interconnections. Considering the inherent paradigm difference and the lack of a mathematical correlation between linear and nonlinear models, the goal here is to quantify a partial correlation between them, in an attempt to establish a relationship. Analyses will be made on signals from normal individuals, and from that operated in pathological situations (Chagas disease and hypertension), noting if the correlation remains at the pairing of the results by a linear statistical approach. It is expected from this study to find out whether exist correlations, and under what conditions this correlation is maintained for normal situations, Chagas disease and hypertension in nonlinear and linear measures.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MURTA, JR., LUIZ O.; GUZO, MAURO G.; MORAES, EDER R.; BAFFA, OSWALDO; WAKAI, RONALD T.; COMANI, SILVIA. Segmented independent component analysis for improved separation of fetal cardiac signals from nonstationary fetal magnetocardiograms. BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK, v. 60, n. 3, SI, p. 235-244, JUN 2015. (10/09921-3)

MURTA, LUIZ O., JR.; GUZO, MAURO G.; MORAES, EDER R.; BAFFA, OSWALDO; WAKAI, RONALD T.; COMANI, SILVIA. Segmented independent component analysis for improved separation of fetal cardiac signals from nonstationary fetal magnetocardiograms. BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK, v. 60, n. 3, p. 10-pg., 2015-06-01. (10/09921-3)