Bárány chair

An article about the Bárány chair, a device used in vestibular function testing

Bárány Chair

The Bárány chair is a device used in the field of otolaryngology and neurology to test the function of the vestibular system, which is responsible for maintaining balance and spatial orientation. It is named after the Hungarian physiologist Robert Bárány, who was awarded the Nobel Prize in Physiology or Medicine in 1914 for his work on the physiology and pathology of the vestibular apparatus.

Demonstration of a Bárány chair

Design and Function

The Bárány chair is designed to rotate around a vertical axis. The subject is seated in the chair, and the chair is spun at a controlled speed. The rotation stimulates the semicircular canals of the inner ear, which are part of the vestibular system. This stimulation can induce nystagmus, a reflexive eye movement that is used to assess the function of the vestibular system.

The chair is typically equipped with a headrest and safety straps to secure the subject during testing. The speed and duration of the rotation can be adjusted depending on the specific test being conducted.

Clinical Applications

The Bárány chair is used in various clinical settings to diagnose vestibular disorders such as vertigo, Meniere's disease, and labyrinthitis. It is also used in research to study the effects of vestibular stimulation on eye movements and postural control.

In addition to its use in diagnosing vestibular disorders, the Bárány chair is also employed in aerospace medicine to train pilots and astronauts to cope with disorienting conditions encountered during flight.

History

The Bárány chair was developed in the early 20th century as part of Robert Bárány's pioneering work on the vestibular system. His research laid the foundation for modern vestibular testing and contributed significantly to our understanding of balance and spatial orientation.

Related pages

• Vestibular system
• Nystagmus
• Vertigo
• Robert Bárány
• Otolaryngology