sound reception

Hearing pathways of the finless porpoise: Form and function in an 'unrepresentative' species

[1433] Mooney, A. T., S. Li, D. R. Ketten, K. Wang, and D. Wang, "Hearing pathways of the finless porpoise: Form and function in an 'unrepresentative' species", 19th Biennial Conference on the Biology of Marine Mammals, Abstracts, vol. Abstracts, issue Abstracts, Tampa, FL, Society for Marine Mammology, pp. 209-210, 11/2011. Get PDF:  Abstract.pdf (format PDF / 265 KB) There are clear variations in the jaw and head morphologies of odontocetes suggesting subtle variation in sound reception. While prior studies have shown mandibular regions are important to odontocete hearing, sound transmission pathway studies have been confined to a few 'representative' species. How an animal receives sound may influence how it uses or is impacted by sound. Here we address how a divergent species, the Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis), receives sound.

The auditory anatomy of the Minke Whale (<em>Balaenoptera acutorostrata</em>): Insights into potential sound reception pathways in a baleen whale

[1431] Yamato, M., D. R. Ketten, J. J. Arruda, S. R. Cramer, and K. Moore, "The auditory anatomy of the Minke Whale (Balaenoptera acutorostrata): Insights into potential sound reception pathways in a baleen whale", 19th Biennial Conference on the Biology of Marine Mammals, vol. Abstracts, Tampa, FL, Society for Marine Mammology, pp. 319, 11/2011. Get PDF:  Abstract.pdf (format PDF / 162 KB) Ken Norris first described a potential mandibular sound reception pathway in odontocetes in 1964. To date, sound reception paths in mysticetes remain unknown. To understand hearing mechanisms in baleen whales, a thorough examination of their auditory anatomy is required. This study combines classical dissection with biomed1cal imaging techniques such as X-ray, computerized tomography (CT), and magnetic resonance imaging (MRl) to describe the anatomy of the minke whale head with a focus on the ear region. Six individuals have been examined to date.
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