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Related Concept Videos

Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
Increased Intracranial Pressure l: Introduction01:14

Increased Intracranial Pressure l: Introduction

Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...
Pathophysiology of Vomiting01:22

Pathophysiology of Vomiting

Vomiting is a complex physiological response to expel harmful or irritating substances from the body. It's a defensive mechanism triggered by stimuli like poisons, microbial toxins, cytotoxic drugs, and mechanical abdominal distension. The process is centrally coordinated by the vomiting (or emetic) center located in the medulla of the brainstem. This area, rich in muscarinic M1, histamine H1, neurokinin 1 (NK1), and serotonin 5-HT3 receptors, coordinates the act of vomiting through interaction...
Equilibrium and Balance01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...
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Neural Regulation of Blood Pressure

The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
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Related Experiment Video

Updated: May 29, 2026

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
10:39

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache

Published on: June 2, 2014

Does low atmospheric pressure independently trigger migraine?

Hayrunnisa Bolay1, Alan Rapoport

  • 1Department of Neurology and Neuropsychiatry Centre, Gazi University, Ankara, Turkey. bolayh@yahoo.com

Headache
|September 13, 2011
PubMed
Summary

Low atmospheric pressure alone does not trigger migraines, even in situations like high-altitude ascent. Migraine triggers likely involve a combination of factors, not just barometric pressure changes.

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Investigating Migraine-Like Behavior Using Light Aversion in Mice
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Last Updated: May 29, 2026

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
10:39

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache

Published on: June 2, 2014

Investigating Migraine-Like Behavior Using Light Aversion in Mice
05:23

Investigating Migraine-Like Behavior Using Light Aversion in Mice

Published on: August 11, 2021

Area of Science:

  • Neurology
  • Environmental Health
  • Meteorology

Background:

  • Migraine triggers are diverse, with weather changes frequently cited but specific components poorly understood.
  • Atmospheric pressure changes, particularly low pressure, are associated with various weather phenomena but their direct link to migraine remains unclear.
  • Human exposure to low atmospheric pressure occurs during air travel and high-altitude ascent.

Purpose of the Study:

  • To investigate the role of atmospheric pressure as a migraine trigger.
  • To explore potential co-factors in weather-related migraine.
  • To synthesize current understanding of atmospheric conditions and migraine.

Main Methods:

  • Review of existing literature on weather and migraine.
  • Analysis of experimental data on atmospheric pressure exposure.
  • Consideration of environmental factors like Saharan dust in relation to migraine.

Main Results:

  • Inconsistent results exist regarding specific weather components triggering migraines.
  • Low atmospheric pressure, when isolated, does not appear to induce migraines.
  • Other atmospheric elements, such as airborne dust, may play a role.

Conclusions:

  • Low atmospheric pressure alone is unlikely to be a direct cause of migraine.
  • Migraine susceptibility may depend on the interplay of multiple atmospheric factors.
  • Further research is needed to elucidate complex weather-migraine relationships.