Evaluation of ear function (Tympanometry and Acoustic Reflexes)
Mobility of the eardrum, ventilation of the middle ear cavity and functionality of the neural connections related with ear function, are examined with tympanometry and acoustic reflexes. A small probe is placed in the earcanal in an airtight fashion, and the device alters the air pressure inside the ear canal, while plotting the reflection of sound by the eardrum. Then, the muscle contractions inside the ear triggered by sounds (acoustic reflexes) are plotted.
The main advantage of this test is that it does not require co-operation of the patient, and therefore can be performed in small children or infants.