Skip to main content

Research Repository

See what's under the surface

Advanced Search

Evaluation of a method for determining binaural sensitivity to temporal fine structure (TFS-AF test) for older listeners with normal and impaired low-frequency hearing

Füllgrabe, Christian; Moore, Brian C.J.

Authors

Christian Füllgrabe christian.fullgrabe@nottingham.ac.uk

Brian C.J. Moore



Abstract

The ability to process binaural temporal fine structure (TFS) information was assessed using the TFS-AF test (where AF stands for adaptive frequency) for 26 listeners aged 60 years or more with normal or elevated low-frequency audiometric thresholds. The test estimates the highest frequency at which a fixed interaural phase difference (IPD) of ϕ (varied here between 30° and 180°) can be discriminated from an IPD of 0°, with higher thresholds indicating better performance. A sensation level of 30 dB was used. All listeners were able to perform the task reliably, giving thresholds well above the lowest allowed frequency of 30 Hz. The duration of a run averaged 5 min. Repeated testing of the normal-hearing listeners showed no significant practice effects. Thresholds varied markedly across listeners, but their ranking was fairly consistent across values of ϕ. Thresholds decreased (worsened) with decreasing ϕ and were lower than for a group of young listeners tested in an earlier study. There were weak to moderate, negative correlations between TFS-AF thresholds and audiometric thresholds at low frequencies (125–1000 Hz) but not at high frequencies (4000–8000 Hz). In conclusion, the TFS-AF test yielded a graded measure of binaural TFS sensitivity for all listeners. This contrasts with the TFS-LF (low-frequency) test, which measures the smallest detectable shift in IPD for a fixed frequency. The absence of practice effects and a reasonably short administration time make the TFS-AF test a good candidate for the assessment of sensitivity to changes in binaural TFS for older listeners without or with hearing loss.

Journal Article Type Article
Publication Date Nov 1, 2017
Journal Trends in Hearing
Electronic ISSN 2331-2165
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 21
APA6 Citation Füllgrabe, C., & Moore, B. C. (2017). Evaluation of a method for determining binaural sensitivity to temporal fine structure (TFS-AF test) for older listeners with normal and impaired low-frequency hearing. Trends in Hearing, 21, doi:10.1177/2331216517737230. ISSN 2331-2165
DOI https://doi.org/10.1177/2331216517737230
Keywords interaural phase; supra-threshold processing; practice effects; clinical screen; sound localization
Publisher URL http://journals.sagepub.com/doi/10.1177/2331216517737230
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
Additional Information

Composition Type:

Files

Fullgrabe_Moore_TrendsHear_ONH_OHI_2ndRevision_Submitted - Copy.doc (4 Mb)
Document

Version
AM - Accepted Manuscript


2331216517737230.pdf (467 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations

;