scholarly journals Cardiac vagal tone: a neurophysiological mechanism that evolved in mammals to dampen threat reactions and promote sociality

2021 ◽  
Vol 20 (2) ◽  
pp. 296-298
Author(s):  
Stephen W. Porges
Keyword(s):  
Vagal Tone ◽  
Neurophysiological Mechanism ◽  
Cardiac Vagal Tone

scholarly journals Effects of lorazepam on cardiac vagal tone during rest and mental stress: assessment by means of spectral analysis

1994 ◽  
Vol 114 (1) ◽  
pp. 81-89 ◽  
Author(s):  
J. H. M. Tulen ◽  
G. Mulder ◽  
L. Pepplinkhuizen ◽  
A. J. Man in't Veld ◽  
H. G. van Steenis ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Mental Stress ◽  
Vagal Tone ◽  
Cardiac Vagal Tone ◽  
Stress Assessment

The Relationship between the Premenstrual Syndrome and Resting Cardiac Vagal Tone in Young Healthy Females: Role of Hormonal Contraception

2019 ◽  
Vol 51 (6) ◽  
pp. 447-454
Author(s):  
D. P. Danel ◽  
K. Kozak ◽  
A. Szala ◽  
C. Kunert-Keil ◽  
A. Dziedzic-Danel ◽  
...  
Keyword(s):  
Premenstrual Syndrome ◽  
Hormonal Contraception ◽  
Vagal Tone ◽  
Cardiac Vagal Tone ◽  
The Relationship ◽  
Healthy Females

scholarly journals Cardiac vagal tone, plasma cortisol, and dehydroepiandrosterone response to an ACTH challenge in lame and nonlame dairy cows

2020 ◽  
Vol 71 ◽  
pp. 106388 ◽  
Author(s):  
V. Jurkovich ◽  
M. Bakony ◽  
E. Laky ◽  
F. Ruff ◽  
F.L. Kézér ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Plasma Cortisol ◽  
Vagal Tone ◽  
Cardiac Vagal Tone ◽  
Acth Challenge

Relation between baroreflex sensitivity and cardiac vagal tone in humans

1994 ◽  
Vol 266 (1) ◽  
pp. H21-H27 ◽  
Author(s):  
M. Kollai ◽  
G. Jokkel ◽  
I. Bonyhay ◽  
J. Tomcsanyi ◽  
A. Naszlady
Keyword(s):  
Baroreflex Sensitivity ◽  
Regression Line ◽  
Systolic Pressure ◽  
Vagal Tone ◽  
Threshold Level ◽  
Dominant Factor ◽  
Cardiac Vagal Tone ◽  
The Individual ◽  
Method R ◽  
Maximum Threshold

The extent of dependence of cardiac vagal tone on arterial baroreceptor input has been studied in 12 healthy, young adult subjects. Cardiac vagal tone was defined as the chang in R-R interval after complete cholinergic blockade by atropine. Baroreflex sensitivity was determined with the "Oxford-method": R-R interval was regressed against systolic pressure. The interindividual correlation between cardiac vagal tone and baroreflex sensitivity for falling pressures was found to be significant, but not close (R = 0.81, P = 0.002). In each subject, the baroreflex regression line for falling pressures was extrapolated to the post-atropine R-R interval level; 50 mmHg was considered as minimum and 80 mmHg as maximum threshold level for the integrated baroreflex. From the relation between the individual regression lines and the minimum and maximum threshold levels, it was concluded that cardiac vagal tone could be generated by both baroreflex-dependent and -independent mechanisms, the ratio of which varies in different individuals, with the baroreflex-dependent mechanism being the dominant factor.

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