Search results for "Cardiac control"

showing 2 items of 2 documents

Quantifying multidimensional control mechanisms of cardiovascular dynamics during multiple concurrent stressors

2021

Heartbeat regulation is achieved through different routes originating from central autonomic network sources, as well as peripheral control mechanisms. While previous studies successfully characterized cardiovascular regulatory mechanisms during a single stressor, to the best of our knowledge, a combination of multiple concurrent elicitations leading to the activation of different autonomic regulatory routes has not been investigated yet. Therefore, in this study, we propose a novel modeling framework for the quantification of heartbeat regulatory mechanisms driven by different neural routes. The framework is evaluated using two heartbeat datasets gathered from healthy subjects undergoing p…

HeartbeatTilt testComputer scienceCold pressor test0206 medical engineeringEmotionsBiomedical Engineering02 engineering and technologyStressAutonomic Nervous SystemCardiovascular System030218 nuclear medicine & medical imaging03 medical and health sciencesNeural activity0302 clinical medicineHeart RateHumansCentral autonomic networkCardiac controlControl (linguistics)Heart rate variabilityStressorEmotion elicitationHealthy subjectsCognitionHeart020601 biomedical engineeringComputer Science ApplicationsPsychophysiologyCentral autonomic network; Cold pressor test; Emotion elicitation; Heart rate variability; Stress; Tilt test; Autonomic Nervous System; Emotions; Heart; Heart Rate; Humans; Cardiovascular SystemSettore ING-INF/06 - Bioingegneria Elettronica E InformaticaCentral autonomic network Cold pressor test Emotion elicitation Heart rate variability Stress Tilt testNeuroscience
researchProduct

Disentangling cardiovascular control mechanisms during head-down tilt via joint transfer entropy and self-entropy decompositions

2015

A full decomposition of the predictive entropy (PE) of the spontaneous variations of the heart period (HP) given systolic arterial pressure (SAP) and respiration (R) is proposed. The PE of HP is decomposed into the joint transfer entropy (JTE) from SAP and R to HP and self-entropy (SE) of HP. The SE is the sum of three terms quantifying the synergistic/redundant contributions of HP and SAP, when taken individually and jointly, to SE and one term conditioned on HP and SAP denoted as the conditional SE (CSE) of HP given SAP and R. The JTE from SAP and R to HP is the sum of two terms attributable to SAP or R plus an extra term describing the redundant/synergistic contribution to the JTE. All q…

Supine positionInformation storageComputer sciencePhysiologyAutonomic nervous system; Baroreflex; Blood pressure variability; Cardiopulmonary coupling; Heart rate variability; Information dynamics; Multivariate linear regression analysis; Physiology; Physiology (medical)Cardiovascular controlAutonomic Nervous Systemlcsh:PhysiologyNuclear magnetic resonanceCardiopulmonary couplingPhysiology (medical)Cardiac controlHeart rate variabilityOriginal Researchlcsh:QP1-981redundancymultivariate linear regression analysiscardiopulmonary couplingBaroreflexHead-Down TiltInformation dynamicSynergySettore ING-INF/06 - Bioingegneria Elettronica E InformaticaSystolic arterial pressureTransfer entropyblood pressure variabilityMultivariate linear regression analysiinformation dynamicsAlgorithmFrontiers in Physiology
researchProduct