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

Factors Affecting Respiration01:24

Factors Affecting Respiration

Respiration is a crucial physiological function involving exchanging oxygen (O2) and carbon dioxide (CO2) between an organism and its environment. Various factors can impact this essential process:
Requirements for Human Life01:26

Requirements for Human Life

The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
Variation of Atmospheric Pressure01:18

Variation of Atmospheric Pressure

Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Hyperpnea and Hyperventilation01:25

Hyperpnea and Hyperventilation

Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...
Chemical Factors Affecting Respiration Centers01:31

Chemical Factors Affecting Respiration Centers

Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated. Under...
Application of Linearization and Approximation01:29

Application of Linearization and Approximation

A drone flying through complex terrain often relies on more than one sensing method to estimate small changes in altitude. Along with direct measurements, air pressure provides a useful indirect indicator of vertical movement. Atmospheric pressure decreases as altitude increases, and this relationship is commonly described using an exponential model. Although accurate, converting pressure measurements into altitude values requires calculations that are too complex to perform repeatedly during...

You might also read

Related Articles

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

Sort by
Same author

The Role of the Kynurenine Pathway in Irreversible Pulpitis.

Journal of dental research·2026
Same author

Perioperative care in cardiac surgery.

BJA education·2021
Same author

Surgically Managed Ovarian Masses at the Royal Children's Hospital, Melbourne -19 Year Experience.

Journal of pediatric surgery·2019
Same author

A guide to managing anaphylaxis for General Duties Medical Officers.

Journal of the Royal Naval Medical Service·2018
Same author

The effects of acute hypoxia on tissue oxygenation and circulating alarmins in healthy adults.

Physiological research·2018
Same author

Power supplies and equipment for military field research: lessons from the British Service Dhaulagiri Research Expedition 2016.

Journal of the Royal Army Medical Corps·2017
Same journal

A tribute to the <i>Journal of the Royal Army Medical Corps</i>.

Journal of the Royal Army Medical Corps·2019
Same journal

Towards the future: The final issue of the journal of the Royal Army Medical Corps 1903-2019.

Journal of the Royal Army Medical Corps·2019
Same journal

Interests and concerns of the Army Medical Services as reflected by the publications in the <i>Journal of the Royal Army Medical Corps</i> 1903-2019.

Journal of the Royal Army Medical Corps·2019
Same journal

Dispatched from the Editor in Chief: does the impact factor have any real relevance to our military health journal?

Journal of the Royal Army Medical Corps·2019
Same journal

Highlights of the edition: the military medical ethics special issue.

Journal of the Royal Army Medical Corps·2019
Same journal

Aeromedical evacuation in the humanitarian and disaster relief environment of Op RUMAN.

Journal of the Royal Army Medical Corps·2019
See all related articles

Related Experiment Video

Updated: Jun 3, 2026

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
12:29

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions

Published on: May 23, 2011

Research at high altitudes.

A Mellor1

  • 1James Cook University Hospital, Middlesborough. dramellor@aol.com

Journal of the Royal Army Medical Corps
|April 7, 2011
PubMed
Summary
This summary is machine-generated.

High altitude research investigates hypobaric hypoxia in mountain environments. Studies aim to understand human adaptation to low oxygen for critical illness treatments, despite field challenges.

Related Experiment Videos

Last Updated: Jun 3, 2026

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions
12:29

Coherence between Brain Cortical Function and Neurocognitive Performance during Changed Gravity Conditions

Published on: May 23, 2011

Area of Science:

  • Physiology
  • Environmental Science
  • Exploration Science

Background:

  • Historically, science and mountain exploration are intertwined.
  • Extensive research on hypobaric hypoxia (low oxygen at high altitude) has been conducted in field and chamber settings.
  • Military contributions include high-altitude operations, chamber studies, and adventurous training expeditions.

Purpose of the Study:

  • To gain insights into human adaptation to hypoxia during critical illness.
  • To explore novel treatment approaches for hypoxia-related conditions.
  • To examine the history and rationale behind high-altitude research.

Main Methods:

  • Conducting studies in hypobaric hypoxia conditions.
  • Utilizing both field studies in mountain environments and controlled hypobaric chamber experiments.
  • Leveraging military operations and adventurous training expeditions as research platforms.

Main Results:

  • Research in hypobaric hypoxia provides valuable data on physiological responses.
  • Field studies present unique logistical challenges, requiring a balance between practical constraints and scientific goals.
  • Insights into adaptation mechanisms can be derived from studying fit individuals under hypoxic stress.

Conclusions:

  • High-altitude research is crucial for understanding hypoxia.
  • Investigating adaptation in healthy individuals may inform critical care strategies.
  • Organizing and executing mountain-based field studies requires careful planning to overcome inherent challenges.