{"created":"2023-07-27T06:55:44.759467+00:00","id":51927,"links":{},"metadata":{"_buckets":{"deposit":"9d0848ee-3da8-47ba-a430-b7c74cbade7d"},"_deposit":{"created_by":18,"id":"51927","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"51927"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00051927","sets":["934:935:936"]},"author_link":["86506","93458","93461","93462","93460","86507","93459","93463"],"item_4_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-07","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"110061","bibliographicVolumeNumber":"134","bibliographic_titles":[{"bibliographic_title":"International Journal of Pediatric Otorhinolaryngology"}]}]},"item_4_creator_33":{"attribute_name":"著者別表示","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"村越, 道生"}],"nameIdentifiers":[{},{}]}]},"item_4_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Objectives\nNeonates 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.\nMethods\nSFI 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.\nResults\nThe 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.\nConclusions\nThe 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.\n","subitem_description_type":"Abstract"}]},"item_4_description_22":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Embargo Period 12 months\n","subitem_description_type":"Other"}]},"item_4_description_5":{"attribute_name":"提供者所属","attribute_value_mlt":[{"subitem_description":"金沢大学理工研究域フロンティア工学系","subitem_description_type":"Other"}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24517/00058227","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_17":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Elsevier"}]},"item_4_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1016/j.ijporl.2020.110061","subitem_relation_type_select":"DOI"}}]},"item_4_relation_28":{"attribute_name":"関連URI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"https://www.sciencedirect.com/science/article/abs/pii/S0165587620302044"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://www.sciencedirect.com/science/article/abs/pii/S0165587620302044","subitem_relation_type_select":"URI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"https://www.sciencedirect.com/journal/international-journal-of-pediatric-otorhinolaryngology"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://www.sciencedirect.com/journal/international-journal-of-pediatric-otorhinolaryngology","subitem_relation_type_select":"URI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"http://www.elsevier.com/locate/issn/01655876"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.elsevier.com/locate/issn/01655876","subitem_relation_type_select":"URI"}}]},"item_4_rights_23":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright © 2020 Elsevier B.V. (CC-BY-NC-ND)"}]},"item_4_source_id_11":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AA00234233","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0165-5876","subitem_source_identifier_type":"ISSN"}]},"item_4_version_type_25":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kanka, Nattikan"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Murakoshi, Michio"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"Hamanishi, Shinji"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"RisakoKakuta"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Matsutani, Sachiko"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kobayashi, Toshimitsu"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Wada, Hiroshi"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-08-01"}],"displaytype":"detail","filename":"TE-PR-MURAKOSI-2020.pdf","filesize":[{"value":"862.8 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"TE-PR-MURAKOSI-110061.pdf ","url":"https://kanazawa-u.repo.nii.ac.jp/record/51927/files/TE-PR-MURAKOSI-2020.pdf"},"version_id":"8e4029c7-7c11-4627-969f-373313547930"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Longitudinal changes in dynamic characteristics of neonatal external and middle ears","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Longitudinal changes in dynamic characteristics of neonatal external and middle ears"}]},"item_type_id":"4","owner":"18","path":["936"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-06-05"},"publish_date":"2020-06-05","publish_status":"0","recid":"51927","relation_version_is_last":true,"title":["Longitudinal changes in dynamic characteristics of neonatal external and middle ears"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2023-07-27T15:42:16.623551+00:00"}