scholarly journals The Effect of Emotional Valence on Ventricular Repolarization Dynamics Is Mediated by Heart Rate Variability: A Study of QT Variability and Music-Induced Emotions

2019 ◽  
Vol 10 ◽  
Author(s):  
Michele Orini ◽  
Faez Al-Amodi ◽  
Stefan Koelsch ◽  
Raquel Bailón
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Emotional Valence ◽  
Ventricular Repolarization ◽  
Qt Variability ◽  
Repolarization Dynamics

scholarly journals Influence of antenatal physical exercise on heart rate variability and QT variability

2016 ◽  
Vol 30 (1) ◽  
pp. 79-84 ◽  
Author(s):  
R. E. Carpenter ◽  
S. J. Emery ◽  
O. Uzun ◽  
D. Rassi ◽  
M. J. Lewis
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Physical Exercise ◽  
Qt Variability

scholarly journals Inside the Interaction: Contact With Familiar Humans Modulates Heart Rate Variability in Horses

2020 ◽  
Vol 7 ◽  
Author(s):  
Chiara Scopa ◽  
Alberto Greco ◽  
Laura Contalbrigo ◽  
Elisabetta Fratini ◽  
Antonio Lanatà ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Methodological Approach ◽  
Objective Assessment ◽  
Emotional Valence ◽  
Physical Contact ◽  
Sympathovagal Balance ◽  
Emotional States ◽  
Objective Evidence ◽  
Human Animal

A human–animal relationship can be developed through subsequent interactions, affected by the positive or negative emotional valence of the proceeding one. Horses implement a process of categorization to classify humans with whom they interact as positive, negative, or neutral stimuli by evaluating the kind of approach and the nature of the contact. In these terms, human–animal interactions are emotionally charged events, eliciting specific emotional states in both subjects involved. Although the human–horse relationship has been mainly investigated through behavioral analysis, physiological indicators are needed for a more objective assessment of the emotional responses. Heart rate variability (HRV) is a commonly used autonomic nervous system (ANS) correlate estimating the sympathovagal balance as a psychophysiological marker of emotion regulation in horses. We have assumed that long-term positive relationships with humans may have a positive and immediate impact on the emotional arousal of the horse, detectable, via ANS activity, during the interaction. We analyzed horses' heartbeat dynamics during their interaction with either familiar or unfamiliar handlers, applying a standardized experimental protocol consisting of three different conditions shifting from the absence of interaction to physical contact. The ANS signals were monitored through an innovative non-invasive wearable system, not interfering with the unconscious emotional response of the animal. We demonstrated that horses appeared to feel more relaxed while physically interacting (e.g., grooming on the right side) with some familiar handlers compared to the same task performed by someone unfamiliar. The shift of the sympathovagal balance toward a vagal predominance suggests that the horses experienced a decrease in stress response as a function not only of the handler's familiarity but also of the type of interaction they are experiencing. These results constitute the objective evidence of horses' capacity to individually recognize a familiar person, adding the crucial role of familiarity with the handler as a paramount component of human–animal interaction. Our rigorous methodological approach may provide a significant contribution to various fields such as animal welfare while further investigating the emotional side of the human–animal relationships.

Heart Rate Variability, QT Variability, and Electrodermal Activity during Exercise

2010 ◽  
Vol 42 (3) ◽  
pp. 443-448 ◽  
Author(s):  
SILKE BOETTGER ◽  
CHRISTIAN PUTA ◽  
VIKRAM K. YERAGANI ◽  
LARS DONATH ◽  
HANS-JOSEF MÜLLER ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Electrodermal Activity ◽  
Qt Variability

Effect of Loss of Heart Rate Variability on T-Wave Heterogeneity and QT Variability in Heart Failure Patients: Implications in Ventricular Arrhythmogenesis

2017 ◽  
Vol 8 (2) ◽  
pp. 219-228 ◽  
Author(s):  
Sachin Nayyar ◽  
Muhammad A. Hasan ◽  
Kurt C. Roberts-Thomson ◽  
Thomas Sullivan ◽  
Mathias Baumert
Keyword(s):  
Heart Failure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Heart Failure Patients ◽  
T Wave ◽  
Qt Variability ◽  
Ventricular Arrhythmogenesis

Assessment and clinical relevance of the dynamic parameters of ventricular repolarization in patients with grade I left ventricular diastolic dysfunction

2019 ◽  
Vol 97 (6) ◽  
pp. 577-580
Author(s):  
Antoinette Oliveira Blackman ◽  
José Sobral Neto ◽  
Melchior Luiz Lima ◽  
Tânia Maria Andrade Rodrigues ◽  
Otoni Moreira Gomes
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Diastolic Dysfunction ◽  
Qt Dispersion ◽  
Left Ventricular Diastolic Dysfunction ◽  
Left Ventricular ◽  
Ventricular Repolarization ◽  
Premature Ventricular Complex ◽  
Increased Risk ◽  
Ventricular Diastolic Dysfunction

Imbalance in ventricular repolarization parameters are related to increased risk of severe arrhythmia and sudden cardiac death. There is limited research regarding markers to detect patients at risk in this early stage. We aimed to assess the influence of grade I left ventricular diastolic dysfunction on repolarization parameters in asymptomatic patients. Ambulatory patients with grade I left ventricular diastolic dysfunction were studied and compared with a control group. We assessed the QT dispersion circadian variation, heart rate variability in the time and frequency domains, and dynamics of QT using a 12-lead Holter. In the diastolic dysfunction group, 8 (30%) patients had QT dispersion > 80 ms. One (3.8%) patient presented premature ventricular complex > 10/h. The comparison between the 2 groups showed that the difference between the standard deviation of normal-to-normal intervals and low frequency power in both groups was statistically significant. We therefore conclude that increased parameters of ventricular repolarization and depressed heart rate variability reflect an imbalance in autonomic responses in patients with grade I left ventricular diastolic dysfunction without cardiovascular symptoms, enabling the identification of patients that are at a higher risk for cardiovascular events.

Analysis of the heart rate variability and ventricular repolarization during pregnancy and after labour

2002 ◽  
Author(s):  
J. Guerrero ◽  
J. Chorro ◽  
V. Alcover ◽  
M. Martinez ◽  
A. Rosado ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Ventricular Repolarization

scholarly journals Recovery of Heart Rate Variability and Ventricular Repolarization Indices Following Exercise

2012 ◽  
Vol 17 (4) ◽  
pp. 349-360 ◽  
Author(s):  
Marc K. Lahiri ◽  
Alexandru Chicos ◽  
Dan Bergner ◽  
Jason Ng ◽  
Smirti Banthia ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Ventricular Repolarization
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