Reference thresholds for the TEN(HL) test for people with normal hearing.

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Reference thresholds for the TEN(HL) test for people with normal hearing.

Int J Audiol. 2017 Apr 10;:1-5

Authors: Hansen AS, Raen Ø, Moore BC

Abstract
OBJECTIVE: To estimate normative values and repeatability of thresholds for the TEN(HL) test for diagnosing dead regions in the cochlea, as a function of signal frequency, TEN(HL) level, age and gender.
DESIGN: The TEN(HL) test was administered twice for each ear of each participant using signal frequencies from 0.5 to 4 kHz and TEN(HL) levels of 30, 50 and 70 dB HL/ERBN.
STUDY SAMPLE: In all, 29 young participants and 8 older participants were tested. All had normal audiograms with no history of hearing problems.
RESULTS: There was good repeatability across sessions. There was no significant effect of ear, gender or age group. The average signal-to-TEN ratio (STR) at threshold was close to 0 dB. For low signal frequencies, the STR at threshold varied only slightly with TEN(HL) level, but for the signal frequencies of 3 and 4 kHz the STR at threshold increased to about +2.7 dB for the TEN(HL) level of 70 dB/ERBN.
CONCLUSIONS: For a high TEN(HL) level, the "normal" STR at threshold at 3 and 4 kHz is closer to +2 dB than to 0 dB. Further research is needed to assess whether the TEN(HL)-test criteria need to be modified when testing at high frequencies and high levels.

PMID: 28394651 [PubMed - as supplied by publisher]

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