Indications For Use
Intended Use
: The GSI Corti is a test instrument that measures otoacoustic
emissions in infants, children, and adults.
Indications for Use
: The GSI Corti series is indicated for testing of
cochlear function in infants, children and adults by measuring otoacoustic
emissions (OAEs). The OAEs are generated by a series of clicks that are
directed into the ear canal.
Otoacoustic emissions are low level audio-frequency sounds that are
produced by the cochlea as part of the normal-hearing process. Available
evidence suggests that otoacoustic emissions are generated by the cochlea’s
outer hair cells and that the presence of OAEs is an indication that the outer
hair cells are viable. Clinical evidence indicates that these emissions
normally occur with normal hearing, or at most, mild hearing loss (usually
30-40 dB HL). The majority of hearing-impaired individuals will be
identified by a simple OAE test.
