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

Pulse rhythm01:30

Pulse rhythm

1.6K
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...
1.6K
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

3.5K
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
3.5K
Electrocardiogram01:29

Electrocardiogram

7.6K
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
7.6K
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

676
Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
676
Decreased pulse rate01:14

Decreased pulse rate

1.0K
Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with...
1.0K
Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

14.6K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
14.6K

You might also read

Related Articles

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

Sort by
Same author

In pursuit of saccade awareness: Limited volitional control and minimal conscious access to catch-up saccades during smooth pursuit eye movements.

Journal of vision·2026
Same author

Medicine ball throw distance weighted with height-to-mass ratio aligns with other physical fitness tasks.

Scientific reports·2026
Same author

"StudiCare Mindfulness": effects of an online mindfulness-based intervention on mindfulness, stress, and interoception in university students - a randomized controlled trial.

BMC psychology·2026
Same author

Microsaccades Do Not Give Rise to a Conscious Feeling of Agency for Their Sensorimotor Consequences in Visual Perception.

Journal of cognition·2025
Same author

Goal-directed behavior and hippocampal activity predict real-life impact of drinking intentions in alcohol use disorder.

Translational psychiatry·2025
Same author

Toward Dynamical Modeling of Infants' Looking Times.

Wiley interdisciplinary reviews. Cognitive science·2025

Related Experiment Video

Updated: Mar 26, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

7.6K

Microsaccades Are Coupled to Heartbeat.

Sven Ohl1, Christian Wohltat2, Reinhold Kliegl2

  • 1Bernstein Center for Computational Neuroscience Berlin, 10115 Berlin, Germany, Department of Psychology, Humboldt Universität zu Berlin, 12489 Berlin, Germany, sven.ohl@bccn-berlin.de.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|January 29, 2016
PubMed
Summary

Human heartbeat influences tiny, rapid eye movements called microsaccades. This coupling between the heart and eye movements suggests bodily signals impact visual processing and must be considered in neuroscience research.

Keywords:
eye movementsheartbeatmicrosaccades

More Related Videos

Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
06:12

Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram

Published on: March 13, 2018

11.2K
Semi-automated Optical Heartbeat Analysis of Small Hearts
12:10

Semi-automated Optical Heartbeat Analysis of Small Hearts

Published on: September 16, 2009

12.9K

Related Experiment Videos

Last Updated: Mar 26, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

7.6K
Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram
06:12

Recording Horizontal Saccade Performances Accurately in Neurological Patients Using Electro-oculogram

Published on: March 13, 2018

11.2K
Semi-automated Optical Heartbeat Analysis of Small Hearts
12:10

Semi-automated Optical Heartbeat Analysis of Small Hearts

Published on: September 16, 2009

12.9K

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Physiology

Background:

  • Humans utilize microsaccades and slow fixational eye movements during visual fixation.
  • These eye movements are integral to the visual processing strategy.

Purpose of the Study:

  • To investigate the hypothesis that microsaccade onsets are coupled to the cardiac cycle.
  • To explore the relationship between heartbeat phase and slow fixational eye movements.

Main Methods:

  • Coregistration of eye movement recordings and electrocardiography (ECG) in human participants.
  • Analysis of microsaccade onsets in relation to the R-R intervals of heartbeats.
  • Assessment of slow eye movement activity relative to cardiac phase.

Main Results:

  • A significant increase in microsaccade generation was observed during the early phase following the R peak in the ECG.
  • Coupling between cardiac phase and motion activity in slow fixational eye movements was also detected.
  • These findings demonstrate a link between the oculomotor system and ongoing heartbeat.

Conclusions:

  • Microsaccades are coupled to the heartbeat, with increased generation timed with the cardiac cycle.
  • Slow eye movements are modulated by the cardiac phase, particularly around the ECG's R peak.
  • This research underscores the influence of physiological signals like heartbeat on visuomotor control and highlights the importance of accounting for eye movements in neuroscience studies involving cardiac signals.