Format

Send to

Choose Destination
See comment in PubMed Commons below
Int J Audiol. 2013 Aug;52(8):526-32. doi: 10.3109/14992027.2013.792437. Epub 2013 May 29.

False air-bone gaps at 4 kHz in listeners with normal hearing and sensorineural hearing loss.

Author information

1
Department of Otolaryngology, University of Minnesota, Minneapolis, MN 55455, USA. margo001@umn.edu

Abstract

OBJECTIVE:

This report presents data from four studies to examine standard bone-conduction reference equivalent threshold force levels (RETFL), especially at 4 kHz where anomalous air-bone gaps are common.

DESIGN:

Data were mined from studies that obtained air- and bone-conduction thresholds from normal-hearing and sensorineural hearing loss (SNHL) participants, using commercial audiometers and standard audiometric transducers.

STUDY SAMPLE:

There were 249 normal-hearing and 188 SNHL participants.

RESULTS:

(1) Normal-hearing participants had small air-bone gaps at 0.5, 1.0, and 2.0 kHz (-1.7 to 0.3 dB) and larger air-bone gaps at 4 kHz (10.6 dB). (2) SNHL participants had small air-bone gaps at 0.5, 1.0, and 2.0 kHz (-0.7 to 1.7 dB) and a larger air-bone gap at 4 kHz (14.1 dB). (3) The 4-kHz air-bone gap grew with air-conduction threshold from 10.1 dB when the air-conduction threshold was 5-10 dB HL to 21.1 dB when the air-conduction threshold was greater than 60 dB. (4) With the 4-kHz RETFL corrected by the average SNHL air-bone gap, the relationship between RETFL and frequency is linear with a slope of - 12 dB per octave.

CONCLUSIONS:

The 4-kHz air-bone gaps for listeners with SNHL could be avoided by adjusting the 4-kHz RETFL by - 14.1 dB.

PMID:
23713469
DOI:
10.3109/14992027.2013.792437
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Taylor & Francis
    Loading ...
    Support Center