Bárány chair  From Wikipedia, the free encyclopedia
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Bárány chair Demonstration of Bárány chair.jpg A test person is
sitting in a swivel chair. A second person has just stopped the
rotation of the chair. The disoriented test person points at a
sign held up by a third person. ICD-9-CM 95.45  The Barany chair
or Bárány chair, named for the Hungarian physiologist Bárány
Róbert, is a device used for aerospace physiology training,
particularly for student pilots.   The subject is placed in the
chair, blindfolded, then spun about the vertical axis while
keeping his head upright or tilted forward or to the side. The
subject is then asked to perform tasks such as determine his
direction of rotation while blindfolded, or rapidly change the
orientation of his head, or attempt to point at a stationary
object without blindfold after the chair is stopped. The chair
is used to demonstrate spatial disorientation effects, proving
that the vestibular system is not to