Multichannel mapping of fetal magnetocardiogram in an unshielded hospital setting. by Brisinda, D, Comani, S, Meloni, A, Alleva, G, Mantini, D, Fenici, R

“…FastICA processing on unshielded FMCG, recorded after the 32nd week, provided beat-to-beat analysis and heart rate variability assessment. …”

Development of a real-time, semi-capacitive impedance phlebography device by Weyer Sören, Weber Hannes, Kleeberg Christian, Leonhardt Steffen, Wartzek Tobias

“…Furthermore a real-time beat-to-beat interval detection algorithm was implemented. …”
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A Neural Network Model for Estimating the Heart Rate Response to Constant Intensity Exercises by Maria S. Zakynthinaki, Theodoros N. Kapetanakis, Anna Lampou, Melina P. Ioannidou, Ioannis O. Vardiambasis

“…Our model’s input and output are the beat-to-beat time intervals and the HR values, respectively. …”
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Entropy Analysis of RR and QT Interval Variability during Orthostatic and Mental Stress in Healthy Subjects by Mathias Baumert, Barbora Czippelova, Anand Ganesan, Martin Schmidt, Sebastian Zaunseder, Michal Javorka

“…Autonomic activity affects beat-to-beat variability of heart rate and QT interval. …”
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Heart rate during conflicts predicts post-conflict stress-related behavior in greylag geese. by Claudia A F Wascher, Orlaith N Fraser, Kurt Kotrschal

“…<h4>Methodology/principal findings</h4>We recorded beat-to-beat heart rates (HR) of 22 greylag geese in response to agonistic encounters using fully implanted sensor-transmitter packages. …”
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Neural Entrainment and Sensorimotor Synchronization to the Beat in Children with Developmental Dyslexia: An EEG Study by Lincoln J. Colling, Hannah L. Noble, Usha Goswami

“…Tapping in time to a metronome beat (hereafter beat synchronization) shows considerable variability in child populations, and individual differences in beat synchronization are reliably related to reading development. …”
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Pearls and pitfalls of cuffless blood pressure monitoring devices by Radu-Alexandru Iacobescu, Bogdan-Danut Florescu, Alina-Mihaela Dimache, Luiza-Elena Corneanu, Elena Adorata Coman

“…This novel technology promises to deliver continuous or beat-to-beat blood pressure measurement and resolve some of the inconveniences associated with conventional cuff-based devices such as improper cuff fit, discomfort, low adherence to monitoring, and technical challenges. …”
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The role of mitochondria for the regulation of cardiac alternans by Stela M Florea, Lothar A Blatter

“…Electromechanical and Ca alternans is a beat-to-beat alternation of action potential duration, contraction strength and Ca transient amplitude observed in cardiac myocytes at regular stimulation frequency. …”
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AV nodal reentrant tachycardia with a 2:1 right bundle branch block missed as bidirectional ventricular tachycardia in the first superficial evaluation by Akbarzadeh Mohammad Ali, Khaheshi Isa, Memaryan Mehdi, Mahjoob Mohammad Parsa, Naderian Mohammadreza

“…It was developed a run of new arrhythmia which was diagnosed by cardiology resident as bidirectional ventricular tachycardia due to beat to beat changing the axis of the QRS. However, a second and more precise evaluation of the abnormal ECG suggested a narrow supraventricular tachycardia, most probably AV nodal reentrant tachycardia with a 2:1 right bundle branch block.…”
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Heart Rate Variability Relates with Competition Performance in Professional Soccer Players by Michele Malagù, Francesco Vitali, Ugo Rizzo, Alessandro Brieda, Ottavio Zucchetti, Filippo Maria Verardi, Gabriele Guardigli, Matteo Bertini

“…Measurements were performed with a portable lightweight device in weekly 5 min sessions from which we obtained the value of the square root of the mean squared differences of successive beat-to-beat intervals (rMSSD). Game parameters of run and velocity were collected. …”
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End-to-End Bayesian Segmentation and Similarity Assessment of Performed Music Tempo and Dynamics without Score Information by Corentin Guichaoua, Paul Lascabettes, Elaine Chew

“…The output is summarized in two forms: as a beat-by-beat profile revealing the posterior credence of plausible boundaries, and as expanded credence segment maps, a novel representation that converts readily to a segmentation lattice but retains information about the posterior uncertainty on the exact position of segments’ endpoints. …”
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Impact of malnutrition on cardiac autonomic modulation in children, by Gláucia Siqueira Carvalho Barreto, Franciele Marques Vanderlei, Luiz Carlos Marques Vanderlei, Álvaro Jorge Madeiro Leite

“…For analysis of HRV indices, heart rate was recorded beat to beat with the child in the supine position for 20 min. …”
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Current and Future Use of Artificial Intelligence in Electrocardiography by Manuel Martínez-Sellés, Manuel Marina-Breysse

“…AI algorithms can help clinicians in the following areas: (1) interpretation and detection of arrhythmias, ST-segment changes, QT prolongation, and other ECG abnormalities; (2) risk prediction integrated with or without clinical variables (to predict arrhythmias, sudden cardiac death, stroke, and other cardiovascular events); (3) monitoring ECG signals from cardiac implantable electronic devices and wearable devices in real time and alerting clinicians or patients when significant changes occur according to timing, duration, and situation; (4) signal processing, improving ECG quality and accuracy by removing noise/artifacts/interference, and extracting features not visible to the human eye (heart rate variability, beat-to-beat intervals, wavelet transforms, sample-level resolution, etc.); (5) therapy guidance, assisting in patient selection, optimizing treatments, improving symptom-to-treatment times, and cost effectiveness (earlier activation of code infarction in patients with ST-segment elevation, predicting the response to antiarrhythmic drugs or cardiac implantable devices therapies, reducing the risk of cardiac toxicity, etc.); (6) facilitating the integration of ECG data with other modalities (imaging, genomics, proteomics, biomarkers, etc.). …”
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Heart Rate Variability - A Historical Perspective by George E Billman

“…Heart rate variability (HRV), the beat-to-beat variation in either heart rate or the duration of the R-R interval – the heart period, has become a popular clinical and investigational tool. …”
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Autonomic cardiac and cardiorespiratory responses in volleyball athletes compared to recreationally trained individuals by Alex Souto Maior, Pedro Menezes, Steven Fleck, Travis Bunker, Matthew Rhea, Richard Diego Leite, Roberto Simão

“…Methods: Twentyeight men were divided into two groups, (VP; n = 14) and (RAT; n = 14) and each group was subjected to a sub-maximal progressive ramp treadmill test. Cardiac cycle beat to beat (RR) intervals, was obtained through electrocardiogram recording with the test being stopped when the individual reached 85% of their maximum age-predicted heart rate (HR). …”
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TEE-guided left ventricular epicardial pacing lead placement for cardiac resynchronization therapy by Rajesh Chand Arya, Naresh Kumar Sood, Sarju Ralhan, Gurpreet Singh Wander

“…Intraoperative TEE can calculate beat to beat stroke volume and thus CO and helps to choose optimal site for placement of epicardial pacing lead.…”
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Electrical impedance plethysmography versus tonometry to measure the pulse wave velocity in peripheral arteries in young healthy volunteers: a pilot study by Wiegerinck A. I. P., Thomsen A., Hisdal J., Kalvøy H., Tronstad C.

“…The estimated PWV results from bioimpedance and the tonometer were fairly in agreement, and the beat-to-beat variability in PAT was similar. This pilot study indicates that the use of IPG may be a good alternative for estimating PWV in the legs.…”
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The Physical Capacity of Rowing Athletes Cannot Reverse the Influence of Age on Heart Rate Variability during Orthostatic Stress by GABRIEL D. RODRIGUES, JONAS L. GURGEL, THIAGO R. GONÇALVES, PEDRO PAULO DA S. SOARES

“…Heart rate (HR) was recorded beat-by-beat for 10 minutes in supine (SUP) and 10 min in orthostatic (ORT) positions. …”
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Heart rate variability is reduced in normal pregnancy irrespective of trimester: A cross-sectional study from Gujarat, India by Jayesh D Solanki, Freya Hiren Desai, Kokila Hiren Desai

“…It can be studied by heart rate variability (HRV) which indicates beat to beat RR interval variation on ECG. Objective: We studied 5 min HRV in normal pregnant females divided by trimesters, compared to matched control. …”
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Autonomic control of cardiorespiratory interactions in fish, amphibians and reptiles by E.W. Taylor, C.A.C. Leite, N. Skovgaard

“…Respiratory sinus arrhythmia (RSA) has been described as a solely mammalian phenomenon but respiration-related beat-to-beat control of the heart has been described in fish and reptiles. …”
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