| Phase-dependent audiometry with low-frequency masking revisited. | |
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MedLine Citation:
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PMID: 20171987 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Low-frequency masking is a psychoacoustical phenomenon, describing the modulation of a high-frequency probe tone burst by a low-frequency masker tone. The probe tone threshold is increased, if the probe tone is presented at a low-frequency phases around 90 degrees and 270 degrees . At these phases, the low-frequency masker tone induces a displacement of the basilar membrane of the inner ear which modulates the sensitivity of the inner hair cells. Measuring the modulation depth is partially applied in clinical routine to diagnose the endolymphatic hydrops. Although the modulation depth differs between normal ears and those which reveal an endolymphatic hydrops, the significance of these tests seems debatable. Here, we describe a new experimental setup, completely consisting of commercially available devices. Further, a user interface was developed to enable the application in the clinical routine. The experimental setup was approved with ten normal hearing listeners. All reveal a modulation of the probe stimulus threshold by different phases of the low-frequency masker stimulus. With this experimental setup, custom-made modifications of the essential parameters are feasible. This would be a contribution to solve open questions on the clinical relevance of the low-frequency masking phenomenon. |
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Authors:
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Torsten Rahne; Christine Rasinski; Kerstin Neumann |
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Publication Detail:
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Type: Journal Article Date: 2010-02-19 |
Journal Detail:
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Title: Journal of neuroscience methods Volume: 188 ISSN: 1872-678X ISO Abbreviation: J. Neurosci. Methods Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-04-12 Completed Date: 2010-06-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7905558 Medline TA: J Neurosci Methods Country: Netherlands |
Other Details:
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Languages: eng Pagination: 302-4 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Hospital Halle Saale, Halle, Saale, Germany. torsten.rahne@medizin.uni-halle.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Acoustics Adult Audiometry / methods* Auditory Perception / physiology* Cochlea / physiology Evoked Potentials, Auditory / physiology Hair Cells, Auditory, Inner / physiology Hearing / physiology* Hearing Loss / diagnosis* Humans Perceptual Masking / physiology* Psychophysics / methods* Reference Values Sound Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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