Results 31 to 40 of about 2,387 (222)
The Underwater Piano: Revival of the Resonance Theory of Hearing
, 2000 In 1857 Helmholtz proposed that the ear contained an array of sympathetic resonators, like piano strings, which served to give the ear its fine frequency discrimination. Since the discovery that most healthy human ears emit faint, pure tones (spontaneous otoacoustic emissions), it has been possible to view these narrowband signals as the continuous ...
Bell, Andrew
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Frontiers in Marine Science, 2022 Detailed post-mortem investigations including the auditory pathway are needed to advance our understanding of how underwater noise and other stressors affect hearing in cetaceans.
Simon Rohner +12 more
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First evidence of underwater vocalizations in green sea turtles Chelonia mydas
Endangered Species Research, 2022 Marine turtles have long been considered to be silent, but few investigations have been performed to confirm such muteness. However, recent studies on the aerial and underwater hearing abilities of marine turtles have shown they have an ability to ...
I Charrier +6 more
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Fishes, 2023 Increased turbulent flow and sediment transport during flood or hydropeaking events often induces rapid changes in underwater sound pressure levels, which is here referred to as soundpeaking.
Johannes L. Kowal +6 more
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Hearing of the African lungfish (Protopterus annectens) suggests underwater pressure detection and rudimentary aerial hearing in early tetrapods [PDF]
, 2015 In the transition from an aquatic to a terrestrial lifestyle, vertebrate auditory systems have undergone major changes while adapting to aerial hearing.
Madsen, Peter Teglberg +2 more
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Captive Bottlenose Dolphins Do Discriminate Human-Made Sounds Both Underwater and in the Air
Frontiers in Psychology, 2018 Bottlenose dolphins (Tursiops truncatus) spontaneously emit individual acoustic signals that identify them to group members. We tested whether these cetaceans could learn artificial individual sound cues played underwater and whether they would ...
Alice Lima +6 more
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Endangered Species Research, 2023 As humans increasingly utilize sensitive coastal areas, diving seabirds like the marbled murrelet Brachyramphus marmoratus face a unique combination of exposure to pervasive anthropogenic sound and acoustically mediated disturbances in terrestrial and ...
AB Smith +4 more
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Stress and Auditory Responses of the Otophysan Fish, Cyprinella venusta, to Road Traffic Noise. [PDF]
PLoS ONE, 2015 Noise pollution from anthropogenic sources is an increasingly problematic challenge faced by many taxa, including fishes. Recent studies demonstrate that road traffic noise propagates effectively from bridge crossings into surrounding freshwater ...
Jenna A Crovo +3 more
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Jurnal Ilmiah Perikanan dan Kelautan, 2021 Highlight Research • The mortality of lobster seeds by predators in the first year is 96.0-99.4% • It takes technology to catch seeds before being eaten by predators • Application of sound wave-based attractor technology to lobsters • Do lobsters have ...
Hari Subagio +6 more
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Underwater Hearing Thresholds [PDF]
The Journal of the Acoustical Society of America, 1956 Underwater hearing thresholds were measured at frequencies of 250, 500, 1000, 2000, and 4000 cps on four Aqualung equipped divers with normal hearing in air. In the frequency range investigated, the minimum audible fields underwater are from 44 to 60 db greater than the minimum audible fields in air, and the shape of the threshold vs frequency curve is
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