Search results for "cardiorespiratory coupling"

showing 2 items of 2 documents

Model-Based Evaluation of Methods for Respiratory Sinus Arrhythmia Estimation

2021

OBJECTIVE: Respiratory sinus arrhythmia (RSA) refers to heart rate oscillations synchronous with respiration, and it is one of the major representations of cardiorespiratory coupling. Its strength has been suggested as a biomarker to monitor different conditions, and diseases. Some approaches have been proposed to quantify the RSA, but it is unclear which one performs best in specific scenarios. The main objective of this study is to compare seven state-of-the-art methods for RSA quantification using data generated with a model proposed to simulate, and control the RSA. These methods are also compared, and evaluated on a real-life application, for their ability to capture changes in cardior…

Scale (ratio)Computer scienceBiomedical EngineeringElectrocardiographyHeart RateHeart rateCoherence (signal processing)Heart rate variabilityHumansArrhythmia Sinusrespiratory sinus arrhythmiaVagal toneRespiratory systemEstimationCardiorespiratory couplingModulationbusiness.industryRespirationheart rate variabilityPattern recognitionComputational modelingCardiorespiratory coupling Computational modeling Couplings Electrocardiography Heart rate variability Modulation Respiratory Sinus ArrhythmiaSettore ING-INF/06 - Bioingegneria Elettronica E InformaticaCouplingsArtificial intelligencebusinessIEEE Transactions on Biomedical Engineering
researchProduct

Slow 0.1 Hz Breathing and Body Posture Induced Perturbations of RRI and Respiratory Signal Complexity and Cardiorespiratory Coupling

2020

Objective: We explored the physiological background of the non-linear operating mode of cardiorespiratory oscillators as the fundamental question of cardiorespiratory homeodynamics and as a prerequisite for the understanding of neurocardiovascular diseases. We investigated 20 healthy human subjects for changes using electrocardiac RR interval (RRI) and respiratory signal (Resp) Detrended Fluctuation Analysis (DFA, α1RRI, α2RRI, α1Resp, α2Resp), Multiple Scaling Entropy (MSERRI1−4, MSERRI5−10, MSEResp1−4, MSEResp5−10), spectral coherence (CohRRI−Resp), cross DFA (ρ1 and ρ2) and cross MSE (XMSE1−4 and XMSE5−10) indices in four physiological conditions: supine with spontaneous breathing, stand…

medicine.medical_specialtySupine positionPhysiologyslow breathing030204 cardiovascular system & hematologyRespiratory signalAutonomic regulationlcsh:Physiology03 medical and health sciences0302 clinical medicinePhysiology (medical)Internal medicinemedicinerespiration rhythm variabilityOriginal Researchlcsh:QP1-981business.industryBody postureCardiorespiratory fitnesscardiorespiratory couplingRR interval variabilityState dependentCardiologyDetrended fluctuation analysisCardiorespiratory couplingbusinesscomplexity030217 neurology & neurosurgeryorthostasis
researchProduct