Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Cardiac Cycle01:29

Cardiac Cycle

The cardiac cycle refers to the sequence of events that occur in the heart from the beginning of one heartbeat to the next. It's characterized by alternating periods of contraction (systole) and relaxation (diastole) of the heart muscles.
During the cardiac cycle, blood flow through the heart is regulated entirely by changing pressure gradients. This sequence of events begins with the heart in a state of total relaxation, known as mid-to-late diastole, during which blood passively flows from...
The Cardiac Cycle01:13

The Cardiac Cycle

The heart beats rhythmically in a sequence called the cardiac cycle—a rapid coordination of contraction (systole) and relaxation (diastole).
The Process
Electrical signals—sent from the sinoatrial (SA) node in the right atrial wall to the atrioventricular (AV) node between the right atrium and right ventricle—cause both atria to simultaneously contract. When the signal reaches the AV node, it pauses for approximately a tenth of a second, allowing the atria to contract and empty blood into the...
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Conduction System of the Heart01:19

Conduction System of the Heart

Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
Conduction System of the Heart01:20

Conduction System of the Heart

The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
Physiology of the Heart: The Cardiac Cycle01:18

Physiology of the Heart: The Cardiac Cycle

The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Early Care and Education Professionals' Breastfeeding Knowledge and Practices Before and After an E-Learning Program.

Journal of health science & education·2024
Same author

Hyperkalemic periodic paralysis aggravated by voltage - gate sodium channel blocker antiepileptic drug?

Medical hypotheses·2020
Same author

Biotic patterns of heart rate variation in depressed and psychotic subjects.

Nonlinear dynamics, psychology, and life sciences·2010
Same author

Predictors of suicidality across the life span: the Isle of Wight study.

Psychological medicine·2009
Same author

Expanding CEP290 mutational spectrum in ciliopathies.

American journal of medical genetics. Part A·2009
Same author

Persistence of literacy problems: spelling in adolescence and at mid-life.

Journal of child psychology and psychiatry, and allied disciplines·2009

Related Experiment Video

Updated: Jun 18, 2026

Semi-automated Optical Heartbeat Analysis of Small Hearts
12:10

Semi-automated Optical Heartbeat Analysis of Small Hearts

Published on: September 16, 2009

The biotic pattern of heartbeat intervals.

H Sabelli1, J Messer2, L Kovacevic1

  • 1Chicago Center for Creative Development, 2400 N. Lakeview, Chicago, Illinois 60614, United States.

International Journal of Cardiology
|November 20, 2009
PubMed
Summary

Heart rate variability reveals complex, evolving biotic patterns over time. Analysis of recurrence plots shows changes in temporal complexity, diversification, and novelty.

More Related Videos

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Published on: February 17, 2018

Related Experiment Videos

Last Updated: Jun 18, 2026

Semi-automated Optical Heartbeat Analysis of Small Hearts
12:10

Semi-automated Optical Heartbeat Analysis of Small Hearts

Published on: September 16, 2009

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Published on: February 17, 2018

Area of Science:

  • Physiology
  • Complexity Science
  • Biomathematics

Background:

  • Heart rate variability (HRV) is a key indicator of physiological state and autonomic nervous system function.
  • Analyzing temporal patterns in physiological data can reveal underlying biological processes.
  • Recurrence quantification analysis (RQA) offers methods to quantify complexity in time series data.

Purpose of the Study:

  • To investigate the temporal dynamics of heart rate variation.
  • To characterize biotic patterns within heart rate data using recurrence plot morphology.
  • To assess the role of temporal complexity, diversification, and novelty in these patterns.

Main Methods:

  • Time series analysis of heart rate data.
  • Construction and analysis of recurrence plots to visualize and quantify temporal dynamics.
  • Morphological analysis of recurrence plots to assess complexity, diversification, and novelty.

Main Results:

  • Observed heart rate variation exhibits distinct biotic patterns.
  • Recurrence plot morphology demonstrated significant changes over time, reflecting temporal complexity.
  • Measures of diversification and novelty were identified within the heart rate patterns.

Conclusions:

  • Heart rate variability contains complex, time-varying biotic patterns.
  • Recurrence plot analysis is effective in characterizing these dynamic physiological patterns.
  • Temporal complexity, diversification, and novelty are crucial components of heart rate dynamics.