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AUDIOLOGY

Experiments on the mechanism of underwater hearing

, , , , &
Pages 1279-1285 | Received 24 May 2011, Accepted 26 Jun 2011, Published online: 05 Sep 2011
 

Abstract

Conclusion: The findings suggest that underwater sound perception is realized by the middle ear rather than by bone conduction, at least in shallow water conditions. Objective: To prove whether underwater sound perception is effected by bone conduction or by conduction via the middle ear. Methods: Five divers, breathing through snorkels, were tested in a swimming pool, to determine whether a sound was louder when the acoustic source placed was in front of the head in comparison with a lateral application facing the ear region. The second experiment investigated whether sound perception is influenced by ear protection plugs in underwater conditions. Also, the effect of a 5 mm thick neoprene hood was determined, with and without an additional perforation in the ear region. Results: Sounds were louder when applied from a position laterally facing the ear, louder without than with a protection plug, louder without than with a neoprene hood on, and louder when the neoprene hood had a perforation in the region of the ear than with an intact hood.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

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