Key result
Complex demodulation of heart-rate variability successfully tracked rapid parasympathetic withdrawal and detected later sympathetic increases in dogs during classical conditioning.
Why the study?
Does complex demodulation of heart-rate variability accurately assess autonomic changes in response to environmental or physiological challenges in dogs?
Does complex demodulation of heart-rate variability accurately assess autonomic changes in response to environmental or physiological challenges in dogs?
Complex demodulation of heart-rate variability provides a noninvasive tool for assessing autonomic changes in response to environmental or physiological challenges.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating for autonomic assessment in animal models; leaves open validation and translation to human cardiovascular research.
Complex demodulation of heart-rate variability was used to analyze changes in the autonomic regulation of dog heart rate during differential classical conditioning before and after autonomic blockade. This method tracked the rapid withdrawal of parasympathetic tone following the onset of the warning signal and detected a later rise in low-frequency power that was tentatively identified as a sympathetic increase. Results during drug blockade supported the analysis in intact conditions. It is concluded that complex demodulation of heart-rate variability provides a powerful tool for noninvasive assessment of autonomic changes in response to environmental or physiological challenges.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Shin et al. (2003) studied Autonomic regulation of heart rate. Complex demodulation of heart-rate variability was evaluated on Changes in autonomic regulation of heart rate. Complex demodulation of heart-rate variability successfully tracked rapid parasympathetic withdrawal and detected later sympathetic increases in dogs during classical conditioning.
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