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Related Concept Videos

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)...
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
The Vestibular System01:29

The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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...
Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular tachycardia.

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Related Experiment Video

Updated: May 24, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
07:24

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Published on: August 22, 2025

Dizziness and vertigo.

David Della-Morte1, Tatjana Rundek

  • 1Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL 33101, USA. ddellamorte@med.miami.edu

Frontiers of Neurology and Neuroscience
|March 2, 2012
PubMed
Summary

Vertigo, a common medical complaint, can be a symptom of stroke. Dizziness and vertigo may indicate posterior circulation stroke, requiring urgent evaluation to distinguish from other causes.

Area of Science:

  • Neurology
  • Otolaryngology

Background:

  • Dizziness is a general disorientation, while vertigo involves a false sense of motion due to sensory system mismatch.
  • Vertigo affects 20-30% of the population and is a common medical complaint.
  • Stroke accounts for 3-7% of vertigo causes, particularly those involving the vertebrobasilar system.

Purpose of the Study:

  • To highlight the significance of stroke as a cause of vertigo.
  • To discuss the diagnostic challenges in differentiating vascular vertigo from other etiologies.
  • To emphasize the importance of prompt evaluation for potential stroke in patients with acute vertigo.

Main Methods:

  • Review of clinical presentation of vertigo and stroke.
  • Analysis of symptoms related to vertebrobasilar system compromise.

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Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
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Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Published on: April 28, 2020

Related Experiment Videos

Last Updated: May 24, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
07:24

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Published on: August 22, 2025

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
06:30

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Published on: April 28, 2020

  • Discussion of diagnostic tools including medical history, physical examination, and neuroimaging.

    • Main Results:

    • Vertigo, nausea, vomiting, and nystagmus can indicate posterior fossa stroke.
    • Symptoms of stroke-related vertigo vary based on the affected vascular territory.
    • Misclassification of vascular vertigo is possible due to overlapping symptoms with other vertigo causes.

    Conclusions:

    • Acute vertigo warrants consideration of stroke, especially in emergency settings.
    • Distinguishing vascular vertigo requires careful clinical assessment and diagnostic studies.
    • Early recognition and diagnosis of stroke-related vertigo are crucial for timely intervention.