Abstract
The combination of suprathreshold tone-bursts with frequency of 0.5, 1 or 2 kHz and ipsilateral high-pass (HP) or notch noise masking has been studied in 52 adults referred for otoneurological examination on account of unilateral or asymmetric high-frequency hearing loss. Wave V latency changes are similar for both HP and notch noise masking and, in accordance with cochlear tonotopicity, are greater for the lower stimulus frequencies. Results are, however, not always conclusive with either technique, and response identification is problematical at 0.5 kHz. The less demanding HP masking technique is considered the method of choice since possible influence from the stapedius reflex is minimal and a better signal-noise ratio obtained.
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