Bárány's sign

n.
  1. An indication of ear disease despite a healthy vestibule in which injection into the external auditory canal of water below the body temperature causes rotary nystagmus toward the opposite side while injection of water above the body temperature causes nystagmus toward the injected side.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.