0000000000164957

AUTHOR

Shadi Ghiasi

showing 3 related works from this author

Quantification of Different Regulatory Pathways Contributing to Heartbeat Dynamics during Multiple Stimuli: a Proof of the Concept.

2019

The dynamical interplay between brain and heart is mediated by several feedback mechanisms including the central autonomic network and baroreflex loop at a peripheral level, also for a short-term regulation. State of the art focused on the characterization of each regulatory pathway through a single stressor elicitation. However, no studies targeted the actual quantification of different mediating routes leading to the generation of heartbeat dynamics, particularly in case of combined exogenous stimuli. In this study, we propose a new approach based on computational modeling to quantify the contribution of multiple concurrent stimuli in modulating cardiovascular dynamics. In this prelimina…

HeartbeatComputer scienceStressorHealthy subjectsHeart Rate VariabilityHeartPhysiological Modelling030204 cardiovascular system & hematologyBaroreflexAutonomic Nervous SystemBiomedical Signal ProcessingCardiovascular System03 medical and health sciences0302 clinical medicineDynamics (music)Heart RateStress PhysiologicalSettore ING-INF/06 - Bioingegneria Elettronica E InformaticaHeart rate variabilityHumansRegulatory PathwayNeuroscience030217 neurology & neurosurgeryStress PsychologicalAnnual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
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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
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Towards Disentangling the Contribution of Different Pathways for the Regulation of Cardiac Activity: A Pilot Study

2020

Heartbeat is dynamically regulated through mediating routes associated with central and peripheral feedback mechanisms. Previous studies focused on the quantification of these mechanisms in the presence of a single stressor. In this pilot study we propose a model aimed to quantify the contribution of different heartbeat regulatory routes while multiple stressors are administrated to the subject. The model is tested with Heart rate Variability (HRV) series from 26 subjects undergoing physical and affective stressors. Results show that the physical stressor prevalently (74%) contributes in mediating cardiac vagal control dynamics in case of concurrent affective elicitation. These results may …

HeartbeatHeart rate Variabilitybusiness.industrySettore ING-INF/06 - Bioingegneria Elettronica E InformaticaStressorMedicineHeart rate variabilityCardiac activitybusinessNeuroscience
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