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Puretone Audiometry Test (PTA)

As the name suggests, this tests involves the use of pure tones i.e. tones which can be accurately provided at desired frequencies. The test requires a sound proof setup as the exact hearing thresholds of the individual for the particular tone at different frequency levels is to be monitored. This is a subjective type test which requires active participation/ cooperation by the patient and hence can be implied on individuals above the age of 6. This test can bring out the degree, configuration and type of hearing loss if any. PTA Test has now become the most widely accepted test and is most relied upon by ENT doctors as well as Audiologists.

Play Audiometry (PA Test)
Play Audiometry Testing is a slight modified version of Pure Tone Audiometry and is implied on children to get their focus and attention to respond to tones. In this test a kind of a game is set in front of a child using toys wherein the child has to perform an act using the toys whenever he hears a tone. This test has proved to be immensely useful in case of children as one may not get accurate responses using the4 traditional method of PTA testing as done on adults.

Behavioral Audiometry (BA Test)
Behavioral Audiometry is used for infants where regular PTA Testing or Play Audiometry may not work. During this test, the behavioral changes are observed in infants when any kind of stimulus like environmental sounds is presented to adjudge the hearing. These behavioral changes may be opening of the eye, widening or sudden movement of the eye, searching behavior of the child, Localization etc. This test is performed in infants between 1 month and 3 years and is good enough to determine whether the infant has a hearing loss or not. For more accurate results either Neonatal Screening with OAE devices is done or BERA Testing is suggested which accounts for responses at the brain stem level.