Results 41 to 50 of about 36,230 (266)

Bidirectional Cardio-Respiratory Interactions in Heart Failure

open access: yesFrontiers in Physiology, 2018
We investigated cardio-respiratory coupling in patients with heart failure by quantification of bidirectional interactions between cardiac (RR intervals) and respiratory signals with complementary measures of time series analysis.
Nikola N. Radovanović   +6 more
doaj   +1 more source

Respiratory Sinus Arrhythmia Mediates the Relation Between “Specific Math Anxiety” and Arithmetic Speed

open access: yesFrontiers in Psychology, 2021
There is a growing consensus that math anxiety highly correlates with trait anxiety and that the emotional component elicited by math anxiety affects math performance. Yet few studies have examined the impact of “specific math anxiety” (high math anxiety
Jiuqing Tang   +7 more
doaj   +1 more source

Macaque cardiac physiology is sensitive to the valence of passively viewed sensory stimuli. [PDF]

open access: yes, 2013
Autonomic nervous system activity is an important component of affective experience. We demonstrate in the rhesus monkey that both the sympathetic and parasympathetic branches of the autonomic nervous system respond differentially to the affective ...
Amaral, David G   +2 more
core   +2 more sources

Resting respiratory sinus arrhythmia in suicide attempters [PDF]

open access: yesPsychophysiology, 2017
AbstractAlthough suicide attempts (SA) occur across a broad range of diagnoses as well as in the absence of a diagnosable disorder, most studies to date have focused on them within a single, specific disorder. Consistent with the NIMH RDoC initiative to identify biobehavioral vulnerabilities that cut across diagnoses, the goal of the present study was ...
Aliona, Tsypes   +5 more
openaire   +2 more sources

Exercise-induced ventricular arrhythmias and vagal dysfunction in Chagas disease patients with no apparent cardiac involvement

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2015
INTRODUCTION : Exercise-induced ventricular arrhythmia (EIVA) and autonomic imbalance are considered as early markers of heart disease in Chagas disease (ChD) patients. The objective of the present study was to verify the differences in the occurrence of
Henrique Silveira Costa   +6 more
doaj   +1 more source

Evaluating Respiratory Sinus Arrhythmia as a Mediator of Relations between Minority Stress and Depressive Symptoms Among Sexual Minorities [PDF]

open access: yes, 2020
Compared with heterosexuals, those with sexual minority identities (e.g., lesbian, gay, bisexual) are at significantly greater risk of psychopathology, including depression—the most common mental health disorder in the general population. A large body of
Mustafa, Jazmyn
core  

Respiratory sinus arrhythmia is reduced in adolescent major depressive disorder

open access: yesEuropean Journal of Medical Research, 2009
Objective Although the emotion regulatory difficulties in patients with major depressive disorder (MDD) are predicted to associate with impaired cardiovascular autonomic regulation, the changes of cardiac vagal regulation in MDD are incompletely ...
Tonhajzerova I   +7 more
doaj   +1 more source

Cardiopulmonary Resonance Function and Indices—A Quantitative Measurement for Respiratory Sinus Arrhythmia

open access: yesFrontiers in Physiology, 2020
Respiratory sinus arrhythmia (RSA) represents a physiological phenomenon of cardiopulmonary interaction. It is known as a measure of efficiency of the circulation system, as well as a biomarker of cardiac vagal and well-being.
Jiajia Cui   +4 more
doaj   +1 more source

A common cardiac sodium channel variant associated with sudden infant death in African Americans, SCN5A S1103Y. [PDF]

open access: yes, 2006
Thousands die each year from sudden infant death syndrome (SIDS). Neither the cause nor basis for varied prevalence in different populations is understood.
Bowers, Peter N   +8 more
core   +2 more sources

Linear and Non-linear Quantification of the Respiratory Sinus Arrhythmia Using Support Vector Machines

open access: yesFrontiers in Physiology, 2021
Respiratory sinus arrhythmia (RSA) is a form of cardiorespiratory coupling. It is observed as changes in the heart rate in synchrony with the respiration. RSA has been hypothesized to be due to a combination of linear and nonlinear effects.
John Morales   +8 more
doaj   +1 more source

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