Results 201 to 210 of about 2,402 (228)
Some of the next articles are maybe not open access.
Underwater Hearing in the Frog, Rana Catesbeiana
Journal of Experimental Biology, 1981ABSTRACT Comparable auditory sound pressure level (SPL) and sound intensity level (SIL) threshold curves were determined in air and under water in Rana catesbeiana. Threshold curves were determined using chronic metal electrode implants which detected multi-unit responses of the torus semicircularis to incident sound.
R. Eric Lombard +2 more
openaire +1 more source
Measuring In-Air and Underwater Hearing in Seabirds
2016Electrophysiological methods were used to measure the in-air hearing of 10 species of seabirds. There are currently no measures of the underwater hearing abilities of diving birds. In preparation for constructing a behavioral audiogram both in-air and underwater hearing, several species of diving ducks were raised.
openaire +2 more sources
Effect of Air Bubbles in the External Auditory Meatus on Underwater Hearing Thresholds
The Journal of the Acoustical Society of America, 1969Thresholds of human hearing were obtained underwater for two conditions: (1) with the external auditory meatus completely water filled and (2) with a bubble of air trapped against the tympanic membrane. The first condition was accomplished by forcibly irrigating the external meatus underwater the second, by placing plugs in the ears in order to ...
H, Hollien, J F, Brandt
openaire +2 more sources
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
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
Underwater hearing sensitivity of two ringed seals (Pusa hispida)
Canadian Journal of Zoology, 1975Minimum audible field, underwater audiograms from 1 to 90 kHz were obtained for two ringed seals (Pusa hispida). The audiograms exhibited a uniform sensitivity, to within ± 7 dB, in the frequency range 1 to 45 kHz. Above 45 kHz the threshold increased at a rate of 60 dB per octave. The lowest threshold was −32 dB relative to 1 μbar (68 dB re 1 μPa) at
J M, Terhune, K, Ronald
openaire +2 more sources
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 ...
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
Underwater Hearing in Seals: The Role of the Outer Ear
1992How sound spreads from water to the inner ear in seals is a problem of particular interest, because seals are semiaquatic mammals and their ears have been adapted secondarily for functioning also in water.
openaire +1 more source