Otoacoustic Emissions in Non-Mammals
Otoacoustic emissions (OAE) that were sound-induced, current-induced, or spontaneous have been measured in non-mammalian land vertebrates, including in amphibians, reptiles, and birds. There are no forms of emissions known from mammals that have not also been observed in non-mammals. In each group a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Audiology Research |
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| Online Access: | https://www.mdpi.com/2039-4349/12/3/27 |
| _version_ | 1797490043356446720 |
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| author | Geoffrey A. Manley |
| author_facet | Geoffrey A. Manley |
| author_sort | Geoffrey A. Manley |
| collection | DOAJ |
| description | Otoacoustic emissions (OAE) that were sound-induced, current-induced, or spontaneous have been measured in non-mammalian land vertebrates, including in amphibians, reptiles, and birds. There are no forms of emissions known from mammals that have not also been observed in non-mammals. In each group and species, the emission frequencies clearly lie in the range known to be processed by the hair cells of the respective hearing organs. With some notable exceptions, the patterns underlying the measured spectra, input-output functions, suppression threshold curves, etc., show strong similarities to OAE measured in mammals. These profound similarities are presumably traceable to the fact that emissions are produced by active hair-cell mechanisms that are themselves dependent upon comparable nonlinear cellular processes. The differences observed—for example, in the width of spontaneous emission peaks and delay times in interactions between peaks—should provide insights into how hair-cell activity is coupled within the organ and thus partially routed out into the middle ear. |
| first_indexed | 2024-03-10T00:25:44Z |
| format | Article |
| id | doaj.art-70929fe46070405fb89dbcb529e1be34 |
| institution | Directory Open Access Journal |
| issn | 2039-4349 |
| language | English |
| last_indexed | 2024-03-10T00:25:44Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Audiology Research |
| spelling | doaj.art-70929fe46070405fb89dbcb529e1be342023-11-23T15:34:35ZengMDPI AGAudiology Research2039-43492022-05-0112326027210.3390/audiolres12030027Otoacoustic Emissions in Non-MammalsGeoffrey A. Manley0Department of Neuroscience, Faculty of Medicine, University of Oldenburg, 26129 Oldenburg, GermanyOtoacoustic emissions (OAE) that were sound-induced, current-induced, or spontaneous have been measured in non-mammalian land vertebrates, including in amphibians, reptiles, and birds. There are no forms of emissions known from mammals that have not also been observed in non-mammals. In each group and species, the emission frequencies clearly lie in the range known to be processed by the hair cells of the respective hearing organs. With some notable exceptions, the patterns underlying the measured spectra, input-output functions, suppression threshold curves, etc., show strong similarities to OAE measured in mammals. These profound similarities are presumably traceable to the fact that emissions are produced by active hair-cell mechanisms that are themselves dependent upon comparable nonlinear cellular processes. The differences observed—for example, in the width of spontaneous emission peaks and delay times in interactions between peaks—should provide insights into how hair-cell activity is coupled within the organ and thus partially routed out into the middle ear.https://www.mdpi.com/2039-4349/12/3/27auditory organhearing epitheliumbasilar papillaamphibianreptilelizard |
| spellingShingle | Geoffrey A. Manley Otoacoustic Emissions in Non-Mammals Audiology Research auditory organ hearing epithelium basilar papilla amphibian reptile lizard |
| title | Otoacoustic Emissions in Non-Mammals |
| title_full | Otoacoustic Emissions in Non-Mammals |
| title_fullStr | Otoacoustic Emissions in Non-Mammals |
| title_full_unstemmed | Otoacoustic Emissions in Non-Mammals |
| title_short | Otoacoustic Emissions in Non-Mammals |
| title_sort | otoacoustic emissions in non mammals |
| topic | auditory organ hearing epithelium basilar papilla amphibian reptile lizard |
| url | https://www.mdpi.com/2039-4349/12/3/27 |
| work_keys_str_mv | AT geoffreyamanley otoacousticemissionsinnonmammals |