Results 191 to 200 of about 33,582 (248)

Daily COVID-19 Stressor Effects on Children's Mental Health Depend on Pre-pandemic Peer Victimization and Resting Respiratory Sinus Arrhythmia. [PDF]

Child Psychiatry Hum Dev
Wong TKY, Colasante T, Malti T.
europepmc   +1 more source

Dyadic resilience after postpartum depression: The protective role of mother-infant respiratory sinus arrhythmia synchrony during play for maternal and child mental health across early childhood. [PDF]

Dev Psychopathol
Somers JA.
europepmc   +1 more source

A unifying conceptual framework of factors associated to cardiac vagal control [PDF]

Labrode, s, Mertgen, A, Mosley, Emma
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A Minimal Model for the Respiratory Sinus Arrhythmia

Biological Cybernetics, 2006
The cardiac and respiratory rhythms in humans are known to be coupled by several mechanisms. In particular, the first rhythm is deeply modulated by the second. In this report we propose a simple operational model for heart rate variability which, taking such modulation into account, reproduces the main features of some experimental sequences of RR ...
Barbi M, Chillemi S, Di Garbo A, Balocchi R, Menicucci D   +4 more
openaire   +3 more sources

Methodological issues in the quantification of respiratory sinus arrhythmia [PDF]

Biological Psychology, 2007
Although respiratory sinus arrhythmia (RSA) is a commonly quantified physiological variable, the methods for quantification are not consistent. This manuscript questions the assumption that respiration frequency needs to be manipulated or monitored to generate an accurate measure of RSA amplitude.
Stephen W Porges
exaly   +3 more sources

Variation of respiratory sinus arrhythmia with age

Journal of Applied Physiology, 1976
Respiratory sinus arrhythmia was measured on 24 male subjects whose agesranged from 21 to 65 yr, using a technique in which respiration was coupledto heart rate, so that there were 6 heartbeats per inspiration and 6 heartbeats per expiration. This voluntary cardiorespiratory coupling reduced the variance of heart rates measured at various points in ...
J B, Hellman, R W, Stacy
openaire   +2 more sources

Respiratory sinus arrhythmia in the human fetus

American Journal of Obstetrics and Gynecology, 1985
This study explores the relationship between fetal heart rate variability and fetal breathing movements in the term fetus. Fourier analysis was applied to fetal heart rate variability during fetal breathing and nonbreathing episodes. A distinct component in the order of 0.7 to 0.95 Hz was demonstrated in fetal heart rate variability during breathing ...
M Y, Divon, S Y, Yeh, E Z, Zimmer, L D, Platt, E, Paldi, R H, Paul   +5 more
openaire   +2 more sources

Model of respiratory sinus arrhythmia in man

Medical & Biological Engineering & Computing, 1989
The first section of the model delineates the parasympathetic signal as a function of the interaction between the respiratory and the vagal neurones of the common brainstem network. The second section is a version of Chess and Calaresu's description of the vagus/heart period system in the sympathetically blocked cat.
R M, Negoescu, I E, Csiki
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Respiratory Sinus Arrhythmia of Brainstem Lesions

Journal of Child Neurology, 1999
In this pilot study we investigated the hypothesis that intrinsic and extrinsic brainstem lesions situated within the pontomedullary region would effect the integrity of respiratory sinus arrhythmia. The study sample consisted of three patients with anatomic brainstem abnormalities associated with isolated Chiari I malformation, Chiari II malformation
F J, DiMario, L, Bauer, D, Baxter
openaire   +2 more sources