Results 191 to 200 of about 35,100 (222)
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Marine mammal ears: An anatomical perspective on underwater hearing
The Journal of the Acoustical Society of America, 1998Analyzing structure and function in specialized ears can produce new insights into fundamental hearing mechanisms and lead to technological advances. Research into dolphin echolocation is a classic example. Recently, however, concerns over anthropogenic sounds in the oceans pushed us to develop a broader knowledge of marine mammal hearing, and, in the ...
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Mechanisms of underwater hearing in larval and adult tiger salamanders ambystoma tigrinum
Comparative Biochemistry and Physiology Part A: Physiology, 19831. A standing wave tube apparatus was used to determine the biophysical basis of underwater hearing in Ambystoma tigrinum. 2. A. tigrinum responds to the pressure component of underwater sound, and the mouth cavity appears responsible for transduction of sound pressure. 3.
T E, Hetherington, R E, Lombard
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In-air and Underwater Hearing of Diving Birds
2014In-air and underwater auditory thresholds were measured in diving bird species, using behavioral and electrophysiological techniques. In the first set of experiments, the auditory brainstem response (ABR) was used to compare in-air auditory sensitivity across ten species of diving birds.
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In-Air and Underwater Hearing in the Great Cormorant (Phalacrocorax carbo sinensis)
2016Hearing thresholds of a great cormorant (Phalacrocorax carbo) were measured in air and under water using psychophysics. The lowest thresholds were at 2 kHz (45 dB re 20 μPa root-mean-square [rms] in air and 79 dB re 1 μPa rms in water). Auditory brainstem response measurements on one anesthetized bird in air indicated an audiogram with a shape that ...
Johansen, Sasia +8 more
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Functional analyses of whale ears: adaptations for underwater hearing
Proceedings of OCEANS'94, 2002The echolocation ability of several dolphin species is well documented, but little is known about hearing characteristics of most marine mammals. This paper describes the major features of the peripheral auditory system in both large and small whales and presents a three-dimensional morphometric analysis of the inner ear in 12 species.
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Effects of underwater noise on human hearing.
Polish journal of occupational medicine and environmental health, 1992Hearing conservation for divers and swimmers has been overlooked nearly everywhere in the world. Because submerging a listener changes his or her auditory physiology dramatically, the research upon which we base exposure limits for airborne noise is not pertinent under water.
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1974
Abstract : The ability of divers to discriminate the angular separation of two sound sources in the presence of high ambient noise in a reverberant environment was tested. In a first experiment it was found that divers could not discriminate directionality with separations as large as 90 degrees for low signal-to-noise ratios.
Gilbert Dering +2 more
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Abstract : The ability of divers to discriminate the angular separation of two sound sources in the presence of high ambient noise in a reverberant environment was tested. In a first experiment it was found that divers could not discriminate directionality with separations as large as 90 degrees for low signal-to-noise ratios.
Gilbert Dering +2 more
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The cormorant ear – an adaptation to underwater hearing?
2016Depending on species, diving birds may spend 2-20 minutes under water during a single foraging dive when they may reach depths ranging from one to several hundred meters. Surprisingly little is known about avian underwater hearing despite the fact that several hundred species dive for food.
Larsen, Ole Næsbye +2 more
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In-air and underwater hearing of the cormorant
2015Numerous studies have mapped the hearing abilities of birds in air but currently there is little or no data on how diving birds hear or react to sound under water. Therefore, it is unknown whether the ears and auditory system of diving birds are adapted to underwater hearing.
Larsen, Ole Næsbye +2 more
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