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

Review and Preview01:10

Review and Preview

8.3K
In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...
8.3K
Review and Preview01:13

Review and Preview

10.9K
Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
10.9K
Autonomic Nervous System01:22

Autonomic Nervous System

12.3K
The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
12.3K
Random and Systematic Errors01:20

Random and Systematic Errors

14.4K
Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
14.4K
Systematic Sampling Method01:17

Systematic Sampling Method

12.6K
Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
Systematic sampling is one of the simplest methods...
12.6K
Autonomic Nervous System: Overview01:26

Autonomic Nervous System: Overview

7.3K
The human nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and spinal cord, while the PNS contains nerve cells, clusters of nerve cells, and the sensory receptors that are outside the CNS. The PNS has two types of nerve cells: sensory (afferent) and motor (efferent). Sensory cells send signals to the CNS from receptors, and motor cells carry signals from the CNS to organs, muscles, and...
7.3K

You might also read

Related Articles

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

Sort by
Same author

Bias in the Composite Outcomes of Kidney-Cardio Protective Trials in Chronic Kidney Disease: A Meta-Epidemiological Study.

Journal of clinical medicine·2026
Same author

Cardiovascular Health Among Employees of a Brazilian Tertiary Hospital Assessed by the Life's Essential 8 Score: A Cross-Sectional Pilot Study.

Journal of clinical medicine·2026
Same author

Teleneurology vs On-Site Neurology Consultation for Postadmission Hospital Care of Stroke.

JAMA neurology·2026
Same author

IV Thrombolysis Facilitates Interventional Reperfusion in Non-Cardioembolic but Not Cardioembolic Stroke.

Annals of clinical and translational neurology·2026
Same author

Neurocardiac Autonomic Dysfunction in Patients With Post-COVID-19 Condition: A Systematic Review and Meta-Analysis.

European journal of neurology·2026
Same author

Performance of three clinical scores for steatosis and steatohepatitis and their interaction with metabolic syndrome in obese individuals.

World journal of hepatology·2026
Same journal

Explainable machine learning-based preliminary screening for viral encephalitis by blood routine analysis.

Frontiers in neurology·2026
Same journal

Global landscape of registered clinical trials of stem cell therapy for spinal cord injury: a cross-sectional analysis.

Frontiers in neurology·2026
Same journal

Experimental verification and PK/PD modeling of selective drug absorption via acupoint administration in rabbit model of rheumatoid arthritis.

Frontiers in neurology·2026
Same journal

Plasma metabolomic signatures of the no-reflow phenomenon in stroke patients following thrombectomy.

Frontiers in neurology·2026
Same journal

Parametric color-coding-derived microvascular transit time may predict infarction and reveals microcirculatory benefits of Tenecteplase in acute ischemic stroke.

Frontiers in neurology·2026
Same journal

The application of fNIRS-sEMG in the study of muscle-brain coupling.

Frontiers in neurology·2026
See all related articles

Related Experiment Video

Updated: Jan 20, 2026

Quantitative Autonomic Testing
11:40

Quantitative Autonomic Testing

Published on: July 19, 2011

58.5K

Autonomic Dysfunction in Preeclampsia: A Systematic Review.

Dalia Yousif1, Ioannis Bellos2, Ana Isabel Penzlin3

  • 1Division of Healthcare Sciences, Center for Clinical Research and Management Education, Dresden International University, Dresden, Germany.

Frontiers in Neurology
|August 27, 2019
PubMed
Summary
This summary is machine-generated.

Autonomic dysfunction is common in preeclampsia, with most affected women showing reduced parasympathetic and increased sympathetic activity. Further research is needed to determine the predictive value of autonomic testing for preeclampsia.

Keywords:
autonomic nervous system modulationbaroreflex sensitivityheart rate variabilitymuscle sympathetic nerve activityparasympathetic activitypreeclampsiasympathetic activity

More Related Videos

Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists
05:22

Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists

Published on: August 11, 2023

2.8K
Measuring Cardiac Autonomic Nervous System ANS Activity in Toddlers - Resting and Developmental Challenges
08:22

Measuring Cardiac Autonomic Nervous System ANS Activity in Toddlers - Resting and Developmental Challenges

Published on: February 25, 2016

15.9K

Related Experiment Videos

Last Updated: Jan 20, 2026

Quantitative Autonomic Testing
11:40

Quantitative Autonomic Testing

Published on: July 19, 2011

58.5K
Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists
05:22

Author Spotlight: Demonstrating Systematic Endobronchial Ultrasound to New Endoscopists

Published on: August 11, 2023

2.8K
Measuring Cardiac Autonomic Nervous System ANS Activity in Toddlers - Resting and Developmental Challenges
08:22

Measuring Cardiac Autonomic Nervous System ANS Activity in Toddlers - Resting and Developmental Challenges

Published on: February 25, 2016

15.9K

Area of Science:

  • Obstetrics and Gynecology
  • Cardiology
  • Neurology

Background:

  • Preeclampsia (PE) is a significant obstetric complication causing severe maternal and fetal harm.
  • Early PE detection can mitigate complications and improve outcomes.
  • Autonomic nervous system (ANS) dysfunction is implicated in PE pathogenesis.

Approach:

  • A comprehensive literature search was conducted across multiple databases (Medline, EMBase, Google Scholar, etc.) from inception to 2018.
  • 26 studies involving 1,854 pregnant women were included.
  • Autonomic function was assessed using various methods including cardiovascular reflex tests, heart rate variability, and nerve activity measurements.

Key Points:

  • 93.6% of women with PE exhibited autonomic dysfunction.
  • Common abnormalities included reduced parasympathetic activity (76%), increased sympathetic activity (60%), and reduced baroreflex gain (80%).
  • Some studies suggest pressor and orthostatic stress tests may aid in early PE risk assessment.

Conclusions:

  • Autonomic dysfunction is highly prevalent in women with preeclampsia.
  • Cardiovascular reflexes, specifically reduced parasympathetic and elevated sympathetic activity, are predominantly affected.
  • The diagnostic utility of autonomic testing for PE prediction and monitoring requires further investigation.