Results 211 to 220 of about 4,975 (251)
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The time course of spontaneous otoacoustic emissions
European Archives of Oto-Rhino-Laryngology, 1992Spontaneous otoacoustic emissions (SOAEs) are amplitude-modulated pure sinus tones. The character of the sinus tone, which is a rare phenomenon in nature, can be proven by resolving the shifts and drifts that more or less always occur. In this report amplitude modulation was studied by digital filtering.
W, Fritze, P, Fritze, W, Gedlicka
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Correlated amplitude fluctuations of spontaneous otoacoustic emissions
The Journal of the Acoustical Society of America, 1998The frequency spectrum of a spontaneous otoacoustic emission (SOAE) recording may contain multiple narrow peaks. These peaks correspond to multiple SOAEs emitted by the inner ear. The individual SOAEs exhibit small amplitude fluctuations. The correlation between the amplitude fluctuations of multiple SOAEs in an individual ear was studied in 19 SOAE ...
van Dijk, P, Wit, HP
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Spontaneous otoacoustic emissions in seven frog species
Hearing Research, 1996Spontaneous otoacoustic emissions were screened for in five advanced frog species (Hyla cinerea, n = 10 ears; Hyla chrysoscelis, n = 10; Hyla versicolor, n = 7; Leptodactylus albilabris, n = 2; Rana pipiens pipiens, n = 8), and two primitive frog species (Xenopus laevis, n = 9; Bombina orientalis, n = 12).
vanDijk, P, Narins, PM, Wang, JX
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Interrelation of spontaneous and evoked otoacoustic emissions
Hearing Research, 1993The interrelation of spontaneous otoacoustic emissions (SOAEs) that can be synchronised by acoustic stimuli and transiently evoked otoacoustic emissions (TEOAEs) was studied in different experiments in normal ears. Click evoked TEOAEs mixed with synchronised SOAEs were investigated in time windows of 102.4 ms.
H, Gobsch, G, Tietze
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Spontaneous Otoacoustic Emissions:Short-time Stability
Acta Oto-Laryngologica, 1992We have examined 307 spontaneous otoacoustic emissions (SOAEs) from 59 ears. The short-time amplitude stability was very good, especially in the high-frequency region. A statistically significant trend for emissions to influence other emissions could not be demonstrated.
O, Lind, J S, Randa
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Spontaneous otoacoustic emissions in the guinea pig
Hearing Research, 1991Measurement of spontaneous otoacoustic emission (SOAE) in a large number of animals was conducted in the guinea pig. A remarkably high incidence of SOAE (51 ears out of 248 ears; 20.6%) was observed in the animals that were raised under unexceptional conditions.
K, Ohyama +3 more
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Temperature dependence of frog spontaneous otoacoustic emissions
The Journal of the Acoustical Society of America, 1987Spontaneous otoacoustic emissions are recorded from frog ears at various body temperatures. Frequency spectra and amplitude distributions of emissions are determined. Both power and frequency of emission signals show a strong temperature dependence.
P, van Dijk, H P, Wit
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Aspects of spontaneous otoacoustic emissions in healthy newborns
Hearing Research, 1993Spontaneous otoacoustic emissions (SOAEs) are pure-tone like signals, spontaneously present in the ear canal. In normal adult ears the prevalence of SOAEs is reported to be 30-70%, probably depending on the noise floor of the recordings. In infant studies, results on the SOAE prevalence are rare.
M R, Kok, G A, van Zanten, M P, Brocaar
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Effects of External Stimuli on Spontaneous Otoacoustic Emissions
Ear and Hearing, 1988The behavior of spontaneous otoacoustic emissions (SOAEs) is affected by external stimuli. A series of experiments was conducted with 25 normal-hearing subjects to explore multiple and bilateral SOAEs, frequency and amplitude drift of SOAEs, suppression functions and existence regions for distortion products generated by the interaction of SOAEs and ...
L R, Frick, M L, Matthies
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Prevalence of spontaneous otoacoustic emissions in adults revisited
Hearing Research, 1997The potential influence of spectral analysis factors on estimates of the prevalence of spontaneous otoacoustic emissions (SOAE) was explored. The detection of a SOAE was influenced by two spectral factors: (1) the frequency resolution of the spectrum, and (2) the number of spectral averages.
M J, Penner, T, Zhang
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