An<unk>  <unk>  is a sound that is generated from within the inner ear. Having been predicted by Austrian astrophysicist Thomas Gold in 1948, its existence was first demonstrated experimentally by British physicist David Kemp in 1978, and<unk> s have since been shown to arise through a number of different cellular and mechanical causes within the inner ear. Studies have shown that<unk> s disappear after the inner ear has been damaged, so<unk> s are often used in the laboratory and the clinic as a measure of inner ear health. Broadly speaking, there are two types of<unk> s: spontaneous<unk> s (SOAEs), which occur without external stimulation, and evoked<unk> s (EOAEs), which require an evoking stimulus.
Otoacoustic emission
Vibroacoustic stimulation
Photoacoustic imaging
Conditioned play audiometry
Auditory brainstem response
Vibroacoustic therapy
Pure-tone audiometry
Visual reinforcement audiometry