Results 31 to 40 of about 892,215 (229)

Resting respiratory sinus arrhythmia in suicide attempters [PDF]

Psychophysiology, 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, Kiera M, James, Mary L, Woody, Cope, Feurer, Anastacia Y, Kudinova, Brandon E, Gibb   +5 more
openaire   +2 more sources

QUANTIFICATION OF RESPIRATORY SINUS ARRHYTHMIA WITH HIGH-FRAMERATE ELECTRICAL IMPEDANCE TOMOGRAPHY

Acta Polytechnica, 2013
Respiratory Sinus Arrhythmia, the variation in the heart rate synchronized with the breathing cycle, forms an interconnection between cardiac-related and respiratory-related signals.
Christoph Hoog Antink, Steffen Leonhardt
doaj   +1 more source

Physiological mechanism of respiratory sinus arrhythmia

, 2021
Respiratory sinus arrhythmia determines cardiac vagal tone and characterizes patterns of autonomic modulation of cardiovascular ...
Hryhorenko, Nadiya, Karmazina, Iryna, Isaieva, Inna   +2 more
core   +1 more source

Basal parasympathetic deficits in C9orf72 hexanucleotide repeat expansion carriers relate to smaller frontoinsula and thalamus volume and lower empathy

NeuroImage: Clinical
Diminished basal parasympathetic nervous system activity is a feature of frontotemporal dementia that relates to left frontoinsula dysfunction and empathy impairment.
Ashlin R. K. Roy, Fate Noohi, Nathaniel A. Morris, Peter Ljubenkov, Hilary Heuer, Jamie Fong, Matthew Hall, Argentina Lario Lago, Katherine P. Rankin, Bruce L. Miller, Adam L. Boxer, Howard J. Rosen, William W. Seeley, David C. Perry, Jennifer S. Yokoyama, Suzee E. Lee, Virginia E. Sturm   +16 more
doaj   +1 more source

THE RELATIONSHIP BETWEEN THE DEFAULT MODE RESTING STATE NEURAL NETWORK, RESPIRATORY SINUS ARRHYTHMIA, AND SELF-FOCUSED COGNITION: AN EMPIRICAL ANALYSIS [PDF]

, 2013
Functional activity within the default mode resting state neural network (RSNN) and the resting respiratory sinus arrhythmia (RSA) may represent an integrated neural and peripheral cardiovascular index of the baseline, resting state in humans.
Egizio, Victoria
core  

Synchronization‐Dissipation in the Cardiorespiratory System

Advanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border, Alain Nogaret, Andrew Lefevre, Vishal Jain   +3 more
wiley   +1 more source

A Dual‐Modal Wearable PPG Smartwatch with AI‐Enhanced Correction for High‐Accuracy and Continuous AF Burden Assessment

Advanced Science, EarlyView.
ABSTRACT Atrial fibrillation (AF) increases the risk of stroke and heart failure, yet accurate quantification of AF burden in daily life remains difficult. Although smartwatch photoplethysmography (PPG) supports continuous monitoring, complex rhythms and signal noise can impair burden estimation.
Song Zuo, Jinglei Wang, Xin Wang, Han Feng, Yize Zhao, Fadong Li, Shaobin Wei, Le Zhou, Zixu Zhao, Songjie Chen, Xiangyi Kong, Jue Wang, Liu He, Shijun Xia, Xin Li, Junmeng Zhang, Xiaoxia Liu, Xueyuan Guo, Ning Zhou, Songnan Li, Chenxi Jiang, Ribo Tang, Caihua Sang, Deyong Long, Xin Du, Jianzeng Dong, Wenwu Zhu, Changsheng Ma   +27 more
wiley   +1 more source

Respiratory and non-respiratory sinus arrhythmia: implications for heart rate variability

, 2012
The quantity of blood arriving at the left side of the heart oscillates throughout the breathing cycle due to the mechanics of breathing. Neurally regulated fluctuations in the length of the heart period act to dampen oscillations of the left ventricular
Towell, A., Rhodes, G., Whitehouse, J., McMullen, M.K.   +3 more
core   +1 more source

Preserving Motor Features by Alternative Re‐Referencing to Remove Heart Artifact on the Stentrode

Advanced Science, EarlyView.
Endovascular brain‐computer interfaces record neural activity from within cerebrovasculature, at the expense of electrocardiogram contamination. Band‐limited independent component analysis separates this heart‐based artifact from task‐relevant neural activity in each frequency band, enabling the reconstruction of cleaner neural recordings without the ...
Ariel K. Feldman, Kriti Kacker, Rahyun Yun, Nikole Chetty, James Bennett, Peter E. Yoo, Raul G. Nogueira, Jennifer L. Collinger, Nicholas L. Opie, Thomas J. Oxley, David F. Putrino, Douglas J. Weber   +11 more
wiley   +1 more source

Tachogram of respiratory sinus arrhythmia.

, 2019
This plot shows how RRI (black) and PWI (red) follow oscillations due to respiratory sinus arrhythmia.
Rafael Mikolajczyk (43665), Thomas Penzel (549657), Alexander Müller (298009), Maria Kluge (8207187), Antonia Graf (7851563), Luise Pelikan (8207190), Johannes Zschocke (146525), Martin Glos (3062619), Jan W. Kantelhardt (6946772), Ronny P. Bartsch (6946766)   +9 more
core   +1 more source