THE AUDIOLOGIC TEST BATTERY
TESTS TO EVALUATE MIDDLE-EAR FUNCTION
The term acoustic immittance is used to refer to either
OBJECTIVE TESTS FOR DIFFERENTIAL DIAGNOSTIC APPLICATIONS
It is thought that the active motility of outer hair cells serves as an amplifier of the displacement of the cochlear partition, resulting in various forms of otoacoustic emissions as by-products that are detectable at low intensities.
These acoustic by-products of outer hair cell motility are often referred to as cochlear echoes.
The measurement of neuroelectric events generated by cochlear structures and the auditory nerve in response to acoustic stimulation.
One of the main clinical applications of electrocochleography is in the differential diagnosis of hydropic conditions of the cochlea that may be associated with M้ni่res disease or other pathologies.
AUDITORY BRAINSTEM RESPONSE
The ABR is a surface-recorded averaged response representing the activity of the distal portion of the auditory pathway.
The ABR reflects the activation of the auditory pathway from the cochlear nerve through the first two or three synapses of the afferent auditory pathway.
It is an ideal tool
Summarized By Thirayost Nimmanon
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