Vestibular hyperacusis is a mix-up between the brain and the sense of hearing. Instead of perceiving sounds as too loud or too high, the brain perceives them as movement sensations. A high note from a singer might trigger a feeling of falling, spinning, or floating (When halfway to sleeping many people have vestibular hyperacousis, when suddenly roused they feel as if they are falling). It is different from cochlear hyperacusis in that many people with vestibular hyperacusis can handle normal sounds just fine, but certain pitches and sounds that have higher than 85 decibels may trigger these sensations. People who have vestibular hyperacusis rarely have tinnitus co-morbidly, while as many as 86% of all CH sufferers have tinnitus.