| Place-specific derived cochlear microphonics from human ears. | |
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MedLine Citation:
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PMID: 1439498 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The high-pass noise masking technique was used to obtain derived frequency-specific cochlear microphonics (CM) from subtracted waveforms to rarefaction and condensation stimuli recorded with a tympanic membrane electrode. Two characteristics suggest that the response is place-specific CM: the derived response retains the same frequency as the stimulating toneburst and the response follows the stimulus polarity. For click stimulation, derived neural responses make the place-specific CM difficult to observe except in the 2-1 kHz derived band. In contrast, place-specific CM evoked by 0.5 and 1 kHz tonebursts can usually be detected in at least three derived bands. The amplitude of the response is largest in the derived band with center-frequency (CF) just above that of the toneburst. This discovery of a place-specific CM offers the possibility of assessing (outer) hair cell function in the apical part of the human cochlea. |
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Authors:
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C W Ponton; M Don; J J Eggermont |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Scandinavian audiology Volume: 21 ISSN: 0105-0397 ISO Abbreviation: Scand Audiol Publication Date: 1992 |
Date Detail:
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Created Date: 1992-12-16 Completed Date: 1992-12-16 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0342230 Medline TA: Scand Audiol Country: SWEDEN |
Other Details:
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Languages: eng Pagination: 131-41 Citation Subset: IM |
Affiliation:
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Electrophysiology Laboratory, House Ear Institute, Los Angeles, California. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adolescent Adult Audiometry, Evoked Response Cochlea / physiology* Cochlear Microphonic Potentials* Evoked Potentials, Auditory, Brain Stem / physiology Female Hair Cells, Auditory / physiology Hearing / physiology Hearing Disorders / diagnosis* Humans Male Noise Tympanic Membrane / physiology |
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