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Respiratory sinus arrhythmia

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https://www.readbyqxmd.com/read/29785749/cardiac-vagal-regulation-in-infancy-predicts-executive-function-and-social-competence-in-preschool-indirect-effects-through-language
#1
Margaret Whedon, Nicole B Perry, Susan D Calkins, Martha A Bell
Parasympathetic nervous system functioning in infancy may serve a foundational role in the development of cognitive and socioemotional skills (Calkins, 2007). In this study (N = 297), we investigated the potential indirect effects of cardiac vagal regulation in infancy on children's executive functioning and social competence in preschool via expressive and receptive language in toddlerhood. Vagal regulation was assessed at 10 months during two attention conditions (social, nonsocial) via task-related changes in respiratory sinus arrhythmia (RSA)...
May 21, 2018: Developmental Psychobiology
https://www.readbyqxmd.com/read/29785748/the-relation-of-respiratory-sinus-arrhythmia-to-later-shyness-moderation-by-neighborhood-quality
#2
Hui Zhang, Tracy L Spinrad, Nancy Eisenberg, Linlin Zhang
The purpose of the study was to predict young children's shyness from both internal/biological (i.e., resting respiratory sinus arrhythmia; RSA) and external (i.e., neighborhood quality) factors. Participants were 180 children at 42 (Time 1; T1), 72 (T2), and 84 (T3) months of age. RSA data were obtained at T1 during a neutral film in the laboratory. Mothers reported perceived neighborhood quality at T2 and children's dispositional shyness at T1 and T3. Path analyses indicated that resting RSA interacted with neighborhood quality to predict T3 shyness, even after controlling for earlier family income and T1 shyness...
May 21, 2018: Developmental Psychobiology
https://www.readbyqxmd.com/read/29782969/electroencephalographic-and-cardiovascular-markers-of-vulnerability-within-families-of-suicidal-adolescents-a-pilot-study
#3
Erin A Kaufman, Sheila E Crowell, James Coleman, Megan E Puzia, Douglas D Gray, David L Strayer
Suicide, self-injury, and predisposing vulnerabilities aggregate in families. Those at greatest risk often show deficits in two biologically-mediated domains: behavioral control and emotion regulation. This pilot study explored electroencephalographic and cardiovascular indices of self-regulation among typical and suicidal adolescents (n = 30/group) and biological family members (mothers, fathers, and siblings). We measured event-related potentials during a flanker task designed to evoke impulsive responding and respiratory sinus arrhythmia (RSA) at rest and during social rejection...
May 18, 2018: Biological Psychology
https://www.readbyqxmd.com/read/29771730/vagal-mediation-of-low-frequency-heart-rate-variability-during-slow-yogic-breathing
#4
Bryan W Kromenacker, Anna A Sanova, Frank I Marcus, John J B Allen, Richard D Lane
OBJECTIVE: Changes in heart rate variability (HRV) associated with breathing (respiratory sinus arrhythmia [RSA]) are known to be parasympathetically (vagally) mediated when the breathing rate is within the typical frequency range (9-24 breaths/min; high frequency HRV). Slow yogic breathing occurs at rates below this range and increases low frequency HRV power, which may additionally reflect a significant sympathetic component. Yogic breathing techniques are hypothesized to confer health benefits by increasing cardiac vagal control, but increases in low frequency HRV power cannot unambiguously distinguish sympathetic from parasympathetic contributions...
May 16, 2018: Psychosomatic Medicine
https://www.readbyqxmd.com/read/29763765/towards-understanding-the-complexity-of-cardiovascular-oscillations-insights-from-information-theory
#5
Michal Javorka, Jana Krohova, Barbora Czippelova, Zuzana Turianikova, Zuzana Lazarova, Radovan Wiszt, Luca Faes
Cardiovascular complexity is a feature of healthy physiological regulation, which stems from the simultaneous activity of several cardiovascular reflexes and other non-reflex physiological mechanisms. It is manifested in the rich dynamics characterizing the spontaneous heart rate and blood pressure variability (HRV and BPV). The present study faces the challenge of disclosing the origin of short-term HRV and BPV from the statistical perspective offered by information theory. To dissect the physiological mechanisms giving rise to cardiovascular complexity in different conditions, measures of predictive information, information storage, information transfer and information modification were applied to the beat-to-beat variability of heart period (HP), systolic arterial pressure (SAP) and respiratory volume signal recorded non-invasively in 61 healthy young subjects at supine rest and during head-up tilt (HUT) and mental arithmetics (MA)...
May 5, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29748953/physiological-linkage-and-affective-dynamics-in-dyadic-interactions-between-adolescents-and-their-mothers
#6
Hannah N McKillop, Arin M Connell
This study examined physiological linkage (specifically, linkage in respiratory sinus arrhythmia; RSA) between parents and youth (aged 11-17) across conflict and fun activity discussion tasks. We also examined whether observed, momentary negative affect or parental depressive symptoms, would moderate patterns of RSA linkage across the interaction tasks. RSA linkage was assessed using a multilevel actor-partner interdependence model (APIM). Participants were 59 mother-adolescent dyads, including mothers with or without clinically significant depressive symptoms...
May 10, 2018: Developmental Psychobiology
https://www.readbyqxmd.com/read/29742754/bidirectional-prospective-associations-between-cardiac-autonomic-activity-and-inflammatory-markers
#7
Mandy X Hu, Femke Lamers, Melanie Neijts, Gonneke Willemsen, Eco J C de Geus, Brenda W J H Penninx
OBJECTIVE: Autonomic nervous system (ANS) imbalance has been cross-sectionally associated with inflammatory processes. Longitudinal studies are needed to shed light on the nature of this relationship. We examined cross-sectional and bidirectional prospective associations between cardiac autonomic measures and inflammatory markers. METHODS: Analyses were conducted with baseline (n=2823), 2-year (n=2099), and 6-year (n=1774) data from the Netherlands Study of Depression and Anxiety (NESDA)...
May 7, 2018: Psychosomatic Medicine
https://www.readbyqxmd.com/read/29741930/highly-sensitive-index-of-cardiac-autonomic-control-based-on-time-varying-respiration-derived-from-ecg
#8
Pierre Gilfriche, Laurent M Arsac, Yannick Daviaux, Jaime Diaz-Pineda, Brice Miard, Olivier Morellec, Jean-Marc André
Frequency-domain indices of Heart Rate Variability (HRV) have been used as a marker of sympathovagal balance. However, they have been shown to be degraded by inter-individual or task-dependent variability, and especially breathing frequency. The study introduces a new method for analyzing respiratory (vagally) mediated Heart Rate Variability, to better assess subtle variations in sympathovagal balance, using ECG information. We evaluated the sensitivity of our new method comparatively to classic HRV analyses with cognitive workload...
May 9, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29731622/chronic-obstructive-pulmonary-disease-severity-and-its-association-with-obstructive-sleep-apnea-syndrome-impact-on-cardiac-autonomic-modulation-and-functional-capacity
#9
Katiany Thays Lopes Zangrando, Renata Trimer, Luiz Carlos Soares de Carvalho, Guilherme Peixoto Tinoco Arêas, Flávia Cristina Rossi Caruso, Ramona Cabiddu, Meliza Goi Roscani, Fabíola Paula Galhardo Rizzatti, Audrey Borghi-Silva
Background: The study was conducted to determine the impact of chronic obstructive pulmonary disease (COPD) in association with obstructive sleep apnea syndrome (OSAS) on cardiac autonomic control and functional capacity. Subjects and methods: The study was a cross-sectional prospective controlled clinical study. Heart rate variability indices of 24 COPD (n = 12) and COPD+OSAS (n = 12) patients were evaluated and compared by electrocardiographic recordings acquired during rest, active postural maneuver (APM), respiratory sinus arrhythmia maneuver (RSA-m), and the 6-minute walk test (6MWT)...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29704163/respiratory-sinus-arrhythmia-in-the-immediate-post-exercise-period-correlation-with-breathing-specific-heart-rate
#10
Jacopo P Mortola, Domnica Marghescu, Rosmarie Siegrist-Johnstone
BACKGROUND: Although the absolute values of pulmonary ventilation and cardiac output are similar, the designs of the respiratory and cardiovascular systems imply major differences in flow patterns, airflow being intermittent by comparison to the quasi-continuous pulmonary blood flow. PURPOSE: We hypothesized that respiratory sinus arrhythmia (RSA, difference in heart rate (fH ) between inspiration and expiration, as percent of mean fH ) ameliorates the inevitable differences between air- and blood-flow patterns...
April 27, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29686620/dynamical-landscape-of-heart-rhythm-in-long-term-heart-transplant-recipients-a-way-to-discern-erratic-rhythms
#11
Joanna Wdowczyk, Danuta Makowiec, Marcin Gruchała, Dorota Wejer, Zbigniew R Struzik
It is commonly believed that higher values of heart rate variability (HRV) indices account for better organization of the network of feedback reflexes driving an organism's response to actual bodily needs. In order to evaluate this organization in heart transplant (HTX) recipients, 58 nocturnal Holter signals of 14 HTX patients were analyzed. Their dynamical properties were evaluated by short-term HRV indices and measures grounded on entropy. Estimates grouped according to the patients' clinical progress: free of complications versus with complications, and arranged in order of the length of time since the HTX, lead us to the conclusion that higher HRV is associated with a worse outcome for HTX patients...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29684768/aberrant-parasympathetic-reactivity-to-acute-psychosocial-stress-in-male-patients-with-schizophrenia-spectrum-disorders
#12
Elizabeth H Andersen, Gregory F Lewis, Aysenil Belger
Autonomic dysfunction represents a core domain of the pathophysiology of schizophrenia spectrum disorders (SCZ), with aberrant physiologic arousal underlying maladaptive social and cognitive behaviors. Antagonistic parasympathetic and sympathetic systems support autonomic flexibility to appropriately regulate arousal and respond to environmental challenges, which can be modeled using physiologic measures. SCZ patients consistently show heightened basal stress, however, their parasympathetic reactivity to an acute psychosocial stressor is poorly understood...
April 6, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29667117/ecg-derived-respiration-based-on-iterated-hilbert-transform-and-hilbert-vibration-decomposition
#13
Hemant Sharma, K K Sharma
Monitoring of the respiration using the electrocardiogram (ECG) is desirable for the simultaneous study of cardiac activities and the respiration in the aspects of comfort, mobility, and cost of the healthcare system. This paper proposes a new approach for deriving the respiration from single-lead ECG based on the iterated Hilbert transform (IHT) and the Hilbert vibration decomposition (HVD). The ECG signal is first decomposed into the multicomponent sinusoidal signals using the IHT technique. Afterward, the lower order amplitude components obtained from the IHT are filtered using the HVD to extract the respiration information...
April 17, 2018: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/29664008/disentangling-respiratory-sinus-arrhythmia-in-heart-rate-variability-records
#14
Cagdas Topcu, Matthias Fruehwirth, Maximilian Moser, Michael Rosenblum, Arkady S Pikovsky
Different measures of heart rate variability and particularly of respiratory sinus arrhythmia are widely used in research and clinical
 applications. Inspired by the ideas from the theory of coupled oscillators, we use simultaneous measurements of respiratory and cardiac activity to perform a nonlinear disentanglement of the heart rate variability into the respiratory-related component and the rest. 
 We suggest to exploit the technique as a universal preprocessing tool, both for the analysis of respiratory influence on the heart rate 
 as well as in cases when effects of other factors on the heart rate variability are in focus...
April 17, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/29620560/unique-autonomic-responses-to-pain-in-yoga-practitioners
#15
Valerie Cotton, Lucie A Low, Chantal Villemure, M Catherine Bushnell
OBJECTIVES: Autonomic nervous system activity is associated with neurobehavioral aspects of pain. Yogis use breathing, relaxation and mindfulness to tolerate pain, which could influence autonomic responses. To evaluate how the link between autonomic responses and pain is altered by other factors, we compared perceptual and autonomic responses to pain between yogis and controls. METHODS: Nineteen yogis and 15 controls rated warm and painfully hot stimuli (1-cm thermode on calf), with visual anticipatory cues indicating certainly painful, certainly non-painful or uncertainly either painful or non-painful...
April 3, 2018: Psychosomatic Medicine
https://www.readbyqxmd.com/read/29559923/bidirectional-cardio-respiratory-interactions-in-heart-failure
#16
Nikola N Radovanović, Siniša U Pavlović, Goran Milašinović, Bratislav Kirćanski, Mirjana M Platiša
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. Heart failure patients were divided into three groups of twenty, age and gender matched, subjects: with sinus rhythm (HF-Sin), with sinus rhythm and ventricular extrasystoles (HF-VES), and with permanent atrial fibrillation (HF-AF). We included patients with indication for implantation of implantable cardioverter defibrillator or cardiac resynchronization therapy device...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29557240/self-reported-stress-and-psychophysiological-reactivity-in-paramedics
#17
A Janka, S Duschek
BACKGROUND: As an important group of health care professionals, paramedics accomplish sophisticated and frequently stressful tasks. DESIGN: The study investigated self-reported stress burden, self-reported health status, coping strategies, personality traits and psychophysiological reactivity in paramedics. METHODS: 30 paramedics were compared with 30 professionals from other disciplines, in terms of self-reported stress, physical complaints, coping strategies, personality traits and psychophysiological reactivity during aversive visual and acoustic stimuli, and cognitive challenge...
March 20, 2018: Anxiety, Stress, and Coping
https://www.readbyqxmd.com/read/29547073/when-stress-becomes-the-new-normal-alterations-in-attention-and-autonomic-reactivity-in-repeated-traumatization
#18
Sarah Herzog, Wendy D'Andrea, Jonathan DePierro, Vivian Khedari
There is need for further work clarifying attention-physiology interactions by degree of exposure to early victimization, as it is clear that cumulative trauma in childhood, that is, polyvictimization, may have lasting effects on the stress response that differ from those of acute traumatization. The present study examined relationships between baseline and task-related physiology (indexed by respiratory sinus arrhythmia [RSA] and heart rate [HR], respectively), and attention biases (via the dot probe task), in 63 community-dwelling adult women stratified on the basis of self-reported exposure to multiple types of childhood interpersonal victimization (i...
May 2018: Journal of Trauma & Dissociation
https://www.readbyqxmd.com/read/29532459/sociodemographic-risk-parenting-and-inhibitory-control-in-early-childhood-the-role-of-respiratory-sinus-arrhythmia
#19
Steven J Holochwost, Vanessa V Volpe, Noa Gueron-Sela, Cathi B Propper, W Roger Mills-Koonce
BACKGROUND: Deficits of inhibitory control in early childhood are linked to externalizing behaviors and attention problems. While environmental factors and physiological processes are associated with its etiology, few studies have examined how these factors jointly predict inhibitory control. This study examined whether respiratory sinus arrhythmia (RSA) functioned as a mediator or moderator of both cumulative sociodemographic risk and parenting behaviors on inhibitory control during early childhood...
March 13, 2018: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/29522373/cardiorespiratory-interactions-in-humans-and-animals-rhythms-for-life
#20
Maja Elstad, Erin L O'Callaghan, Alexander J Smith, A Ben-Tal, Rohit Ramchandra
The cardiorespiratory system exhibits oscillations from a range of sources. One of the most studied oscillations is heart rate variability, which is thought to be beneficial and can serve as an index of a healthy cardiovascular system. Heart rate variability is dampened in many diseases including depression, autoimmune diseases, hypertension and heart failure. Thus, understanding the interactions that lead to heart rate variability, and its physiological role, could help with prevention, diagnosis and treatment of cardiovascular diseases...
March 9, 2018: American Journal of Physiology. Heart and Circulatory Physiology
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