Assr Masking - Interacoustics Eclipse Additional Information

Eclipse Additional Information

6.10 ASSR Masking

An ASSR threshold can be masked to ensure that the threshold level is not overheard. The easiest way to
apply masking during a measurement is to stop the measurement or wait until the running curves are com-
plete.
For infant testing, masking should be applied when the interaural hearing difference between right and left
ear exceeds:
•
Insert phones = 60-70dB nHL
•
Headphones = 40dB nHL
•
Bone = 15dB nHL
Studies indicate an interaural attenuation of 20 to 30dB when using the bone conductor, so
need to mask at or below 15dB eHL. If responses are seen at 15dBeHL then it must be from the ipsilateral
ear. If right ear and left ear thresholds are no more than 15dB apart (10dB at lower frequencies) then no
need to mask (Small et al., 2007).
1. Enter the temporary setup
2. Tick the White Noise Masking on the ear that you want to mask.
3. Select the level of masking that you want to apply. Note That the level of masking is applied in dB SPL.
4. Press OK and Start the measurement.
to activate WN masking.
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