•Unequal
vestibular stimulation, cont.:
–Middle or inner ear barotrauma
affecting one side
–Decompression sickness on one side
–Alternobaric vertigo: failure of the
ears to equalize pressure to the same degree stimulates the vestibular system
unequally
•Normally
occurs on ascent as pressure in the middle ear spaces becomes greater on one side due to differences in
patency of the Eustachian tubes
•Common
occurrence which resolves after equalizations of the blocked middle ear