{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T23:47:54Z","timestamp":1792712874727,"version":"4.5.0"},"reference-count":39,"publisher":"IOP Publishing","issue":"5","license":[{"start":{"date-parts":[[2024,9,4]],"date-time":"2024-09-04T00:00:00Z","timestamp":1725408000000},"content-version":"vor","delay-in-days":3,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2024,9,4]],"date-time":"2024-09-04T00:00:00Z","timestamp":1725408000000},"content-version":"tdm","delay-in-days":3,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["Bioinspir. Biomim."],"published-print":{"date-parts":[[2024,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Like other odontocetes, Risso\u2019s dolphins actively emit clicks and passively listen to the echoes during echolocation. However, the head anatomy of Risso\u2019s dolphins differs from that of other odontocetes by a unique vertical cleft along the anterior surface of the forehead and a differently-shaped lower jaw. In this study, 3D finite-element sound reception and production models were constructed based on computed tomography (CT) data of a deceased Risso\u2019s dolphin. Our results were verified by finding good agreement with experimental measurements of hearing sensitivity. Moreover, the acoustic pathway for sounds to travel from the seawater into the dolphin\u2019s tympanoperiotic complexes (TPCs) was computed. The gular reception mechanism, previously discovered in <jats:italic>Delphinus delphis<\/jats:italic> and <jats:italic>Ziphius cavirostris<\/jats:italic>, was also found in this species. The received sound pressure levels and relative displacement at TPC surfaces were compared between the cases with and without the mandibular fats or mandible. The results demonstrate a pronounced wave-guiding role of the mandibular fats and a limited bone-conductor role of the mandible. For sound production modelling, we digitally filled the cleft with neighbouring soft tissues, creating a hypothetical \u2018cleftless\u2019 head. Comparison between sound travelling through a \u2018cleftless\u2019 head vs. an original head indicates that the distinctive cleft plays a limited role in biosonar sound propagation.<\/jats:p>","DOI":"10.1088\/1748-3190\/ad7344","type":"journal-article","created":{"date-parts":[[2024,8,23]],"date-time":"2024-08-23T22:57:42Z","timestamp":1724453862000},"page":"056025","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["Validated 3D finite-element model of the Risso\u2019s dolphin (Grampus griseus) head anatomy demonstrates gular sound reception and channelling through the mandibular fats"],"prefix":"10.1088","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2359-9285","authenticated-orcid":true,"given":"Chong","family":"Wei","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7884-9907","authenticated-orcid":true,"given":"Christine","family":"Erbe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam B","family":"Smith","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei-Cheng","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2024,9,4]]},"reference":[{"key":"bbad7344bib1","doi-asserted-by":"publisher","first-page":"3305","DOI":"10.1121\/1.1401757","article-title":"Three-dimensional modeling of hearing in Delphinus delphis","volume":"110","author":"Aroyan","year":"2001","journal-title":"J. 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Published by IOP Publishing Ltd","name":"copyright_information","label":"Copyright Information"},{"value":"2024-06-29","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-08-23","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-09-04","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}