Cardiovascular regulation and autonomic function change across sleep stages and compared to wake. Little information is present in literature about cardiac control during sleep especially in relation to new information-theoretic quantities such as synergy and redundancy. In the present work we compute synergy and redundancy of baroreflex and non-baroreflex components of the cardiac control according to two information-theoretic approaches, namely predictive information decomposition (PID) and minimal mutual information (MMI) methods. We applied a bivariate approach to heart period (HP) and systolic arterial pressure (SAP) beat-to-beat variability series during sleep in a healthy subject. PID approach computes the net balance between synergy and redundancy, while MMI calculates the two quantities as separate entities. Results suggested that: i) redundancy was dominant over synergy during NREM phases; ii) redundancy increased during NREM phase; iii) synergy did not change across the sleep stages. We interpret this result as a consequence of the vagal enhancement, slowing and deepening of respiration during NREM phases. These preliminary findings support the potential of assessing redundancy/synergy of baroreflex-related and unrelated regulations during sleep to improve our knowledge about physiological mechanisms.
Assessing synergy/redundancy of baroreflex and non-baroreflex components of the cardiac control during sleep / B. Cairo, V. Bari, B. De Maria, E. Vaini, P. Guaraldi, D. Lucini, M. Pagani, F. Provini, G. Calandra Buonaura, P. Cortelli, A. Porta (IEEE ENGINEERING IN MEDICINE AND BIOLOGY ... ANNUAL CONFERENCE PROCEEDINGS). - In: 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)[s.l] : IEEE Press, 2019. - ISBN 9781538613115. - pp. 4953-4956 (( Intervento presentato al 41. convegno Annual International Conference of the IEEE EMBS tenutosi a Berlin nel 2019.
|Titolo:||Assessing synergy/redundancy of baroreflex and non-baroreflex components of the cardiac control during sleep|
|Settore Scientifico Disciplinare:||Settore ING-INF/06 - Bioingegneria Elettronica e Informatica|
Settore MED/09 - Medicina Interna
Settore M-EDF/01 - Metodi e Didattiche delle Attivita' Motorie
|Data di pubblicazione:||2019|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/EMBC.2019.8856887|
|Tipologia:||Book Part (author)|
|Appare nelle tipologie:||03 - Contributo in volume|