Heart rate dynamics assessed by different strategies of symbolization

Dirk Cysarz, Alberto Porta, Nicola Montano, Jürgen Kurths, Niels Wessel, Friedrich Edelhäuser, Peter Van Leeuwen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The analysis of symbolic dynamics applied to the RR interval series is able to retrieve information about dynamical properties. Three different strategies of symbolic transformations were investigated: (1) symbolization based on the deviation from the average, (2) symbolization based on equidistant levels between the minimum and maximum, (3) binary symbolization of the first derivative. Each method was applied to the RR interval series and its difference of 17 healthy subjects obtained during head-up tilt testing. Dynamical properties were assessed by the occurrence of short sequences ('words') of length 3. The occurrence of words was grouped according to variations of the symbols in each word (0, 1, and 2 variations). Linear regression analysis showed that the occurrence of these words reflects changes of heart rate dynamics during graded head-up tilt. Hence, very short symbolic sequences are able to track changes of the cardiac autonomic regulation.

Original languageEnglish
Title of host publication2014 8th Conference of the European Study Group on Cardiovascular Oscillations, ESGCO 2014
PublisherIEEE Computer Society
Pages51-52
Number of pages2
ISBN (Print)9781479939695
DOIs
Publication statusPublished - 2014
Event2014 8th Conference of the European Study Group on Cardiovascular Oscillations, ESGCO 2014 - Trento, Italy
Duration: May 25 2014May 28 2014

Other

Other2014 8th Conference of the European Study Group on Cardiovascular Oscillations, ESGCO 2014
Country/TerritoryItaly
CityTrento
Period5/25/145/28/14

ASJC Scopus subject areas

  • Biomedical Engineering

Fingerprint

Dive into the research topics of 'Heart rate dynamics assessed by different strategies of symbolization'. Together they form a unique fingerprint.

Cite this