Publication

Extraction and Analysis of Short-Time Excursions in RR-interval Time Series

Jean-Marc Vesin
2016
Conference Papers

Abstract

RR-interval time series often present impulses corresponding to short-duration increases or decreases in the heart rate, most probably due to bursts in autonomic activity. The time-domain heartrate variability index pNN50 is obviously linked to these spikes. As linear filtering is not appropriate for the extraction of these spikes, we developed a nonlinear algorithm for this task. In this study we demonstrate the potential of this approach to assess caffeine-induced changes in the autonomic tone, and discuss the potential of this approach.

Official source

https://infoscience.epfl.ch/entities/publication/a5a62e62-4037-46d3-bd06-6377107e190b

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Jean-Marc Vesin
2016
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a5a62e62-4037-46d3-bd06-6377107e190b

About this result

Related concepts (22)

Heart rate

Heart rate (or pulse rate) is the frequency of the heartbeat measured by the number of contractions of the heart per minute (beats per minute, or bpm). The heart rate can vary according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide, but is also modulated by numerous factors, including (but not limited to) genetics, physical fitness, stress or psychological status, diet, drugs, hormonal status, environment, and disease/illness as well as the interaction between and among these factors.

Bradycardia

Bradycardia (also sinus bradycardia) is a slow resting heart rate, commonly under 60 beats per minute (BPM) as determined by an electrocardiogram. It is considered to be a normal heart rate during sleep, in young and healthy or elderly adults, and in athletes. In some people, bradycardia below 60 BPM may be associated with fatigue, weakness, dizziness, sweating, and fainting. The term "relative bradycardia" is used to refer to a heart rate slower than an individual's typical resting heart rate.

Autonomic nervous system

The autonomic nervous system (ANS), formerly referred to as the vegetative nervous system, is a division of the nervous system that supplies internal organs, smooth muscle and glands. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, its force of contraction, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response.

Related publications (1)

Extraction and Analysis of Short-Time Excursions in RR-interval Time Series

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Real-Time Respiratory Rate Estimation using Imaging Photoplethysmography Inter-Beat Intervals