Cross-correlation of heartbeat and respiration rhythms

Autor(es)

Contreras, P. ; Migliaro, E. R. ; Capurro Stanham, Alberto ^[3] ; Malta, Coraci Pereira ^[4]

• Tipo de documento: Artigo Científico
• Fonte: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS; v. 356, n. 1, p. 37-42, Oct. 2005.
• Área do conhecimento: Ciências Exatas e da Terra - Física
• Assunto(s): Matemática Sistemas dinâmicos

Resumo

The cross-correlation function between respiration and heart beat interval series shows that during metronomized breathing1 the heart beat follows the respiration more closely than during spontaneous breathing. We reproduced the heart beat interval modulations during metronomized breathing using a biophysical model of the sinoatrial node excited by an input signal formed by the recorded respiration. In the case of spontaneous breathing, a good agreement with the experimental data was obtained only by using an input signal formed by the sum of the recorded respiration and a realization of correlated noise. (AU)

• Processo FAPESP: 00/14357-8 - Application of information theory techniques to the analysis of time series obtained from biological systems
• Beneficiário: Alberto Capurro Stanham
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado