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Longitudinal changes in dynamic characteristics of neonatal external and middle ears
https://doi.org/10.24517/00058227
https://doi.org/10.24517/000582270a7a5236-ae2c-42dc-a213-d0039bf95da0
| 名前 / ファイル | ライセンス | アクション |
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TE-PR-MURAKOSI-110061.pdf (862.8 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2020-06-05 | |||||
| タイトル | ||||||
| タイトル | Longitudinal changes in dynamic characteristics of neonatal external and middle ears | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| ID登録 | ||||||
| ID登録 | 10.24517/00058227 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
Kanka, Nattikan
× Kanka, Nattikan× Murakoshi, Michio× Hamanishi, Shinji× RisakoKakuta× Matsutani, Sachiko× Kobayashi, Toshimitsu× Wada, Hiroshi |
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| 著者別表示 |
村越, 道生
× 村越, 道生 |
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| 提供者所属 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 金沢大学理工研究域フロンティア工学系 | |||||
| 書誌情報 |
International Journal of Pediatric Otorhinolaryngology 巻 134, p. 110061, 発行日 2020-07 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0165-5876 | |||||
| NCID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00234233 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.ijporl.2020.110061 | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Objectives Neonates have smaller and less mature ears than adults. Developmental changes in structure and function continually occur after birth and may affect the diagnostic results obtained by audiometric assessment instrumentation, such as tympanometry and otoacoustic emission. In the present study, we investigated longitudinal changes in external and middle ear dynamic characteristics by performing sweep frequency impedance (SFI) tests. Methods SFI tests were longitudinally performed on healthy Japanese neonates (1 female and 1 male) from birth to 3 and 5 months, respectively. A sound of sweeping sinusoidal frequency, ranging from 0.1 kHz to 2 kHz, was presented to the ear canal at 50-daPa intervals of static pressure from +200 to −200 daPa. Test results were expressed a curve showing the sound pressure level (SPL) relative to probe tone frequency, called SPL curve. Results The first fluctuation in resonance frequency (RF1) and SPL (ΔSPL1), related to the external ear, showed significant developmental changes as chronological age increased; that is, RF1 and ΔSPL1 were respectively increased and decreased and thereafter became unmeasurable by 5 months of age. In contrast, the second fluctuation in resonance frequency (RF2) and SPL (ΔSPL2), related to the middle ear, did not show significant changes over the measurement period. Conclusions The present results suggest that the dynamic characteristics of the external ear canal wall changed with increases in chronological age; the resonance of the wall at about 0.3 kHz at birth tended to increase to about 0.7 kHz and to be unmeasurable by 5 months of age, while those of the middle ear did not significantly changed. These results showing how neonatal-ear dynamics changes with chronological age may be an important key in further hearing research and the development of hearing devices and diagnostic tools suitable for neonates. |
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| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Embargo Period 12 months | |||||
| 権利 | ||||||
| 権利情報 | Copyright © 2020 Elsevier B.V. (CC-BY-NC-ND) | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 関連URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/abs/pii/S0165587620302044 | |||||
| 関連名称 | https://www.sciencedirect.com/science/article/abs/pii/S0165587620302044 | |||||
| 関連URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/journal/international-journal-of-pediatric-otorhinolaryngology | |||||
| 関連名称 | https://www.sciencedirect.com/journal/international-journal-of-pediatric-otorhinolaryngology | |||||
| 関連URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.elsevier.com/locate/issn/01655876 | |||||
| 関連名称 | http://www.elsevier.com/locate/issn/01655876 | |||||
