Test Procedure - TEN Test
Purpose of the TEN Test is to identify cochlear dead regions. This is useful for
several purposes including the following:
•
Counseling about the benefit of hearing aids.
•
Assisting in hearing aid selection or cochlear implant candidacy.
•
Fitting hearing aids.
The accepted rule is that a dead region is present when the TEN-masked
threshold is at least 10 dB above the audiometric threshold and the TEN
Threshold is 10 dB or more above the TEN noise.
•
Channel 1 and Channel 2 will be routed to the same ear (default is the
Right ear).
•
Channel 1 stimulus will be tone.
•
Channel 2 stimulus will be TEN Noise.
•
The step size will default to 2 dB.
•
To perform the test, use the following guide.
Presentation Level
•
If the hearing loss is 60 dB or less, start the TEN noise level at 70 dB.
•
If the hearing loss is 70 dB or greater, start the TEN level 10 dB higher
than the threshold.
•
If the TEN is reported to be too loud, start the TEN level at the same
level as the threshold.
Test Instructions
When the starting level has been determined, instruct the patient in the same
manner as when measuring pure tone thresholds with masking.
Test Procedure
The procedure for determining thresholds in the TEN is identical to the manual
pure tone audiometry except that a 2 dB final step size should be used for
maximum accuracy. The TEN will take approximately 4 minutes per ear (to
complete all test frequencies).
NOTE:
The test may be conducted for frequencies between 500 and 4,000 Hz
Press the Store button to store the TEN threshold and advance to the next
frequency or ear.
NOTE:
The TEN threshold symbol will be the word “TEN.”