Otoacoustic Emission
Mostrando 25-29 de 29 artigos, teses e dissertações.
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25. Distortion-product otoacoustic emission input∕output characteristics in normal-hearing and hearing-impaired human ears
Distortion-product otoacoustic emission (DPOAE) input∕output (I∕O) functions were measured in 322 ears of 176 subjects at as many as 8 f2 frequencies per ear for a total of 1779 I∕O functions. The f2 frequencies ranged from 0.7 to 8 kHz in half-octave steps. Behavioral thresholds (BTs) at the f2 frequencies ranged from −5 to 60 dB hearing loss (HL).
Acoustical Society of America.
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26. Effects of salicylates and aminoglycosides on spontaneous otoacoustic emissions in the Tokay gecko
The high sensitivity and sharp frequency discrimination of hearing depend on mechanical amplification in the cochlea. To explore the basis of this active process, we examined the pharmacological sensitivity of spontaneous otoacoustic emissions (SOAEs) in a lizard, the Tokay gecko. In a quiet environment, each ear produced a complex but stable pattern of emis
The National Academy of Sciences.
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27. Outcomes of neonatal screening for hearing loss by otoacoustic emission.
AIM: To assess universal neonatal screening for bilateral hearing impairments averaging 40 dBHL or worse in the better ear, using transient evoked otoacoustic emission screening (TEOAE) testing. METHODS: A three year cohort (14,353 infants born from January 1992 to 1995) was screened and subsequently followed up by hearing surveillance methods, including a d
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28. Hair-bundle movements elicited by transepithelial electrical stimulation of hair cells in the sacculus of the bullfrog
Electrically evoked otoacoustic emission is a manifestation of reverse transduction by the inner ear. We present evidence for a single-cell correlate of this phenomenon, hair-bundle movement driven by transepithelial electrical stimulation of the frog's sacculus. Responses could be observed at stimulus frequencies up to 1 kHz, an order of magnitude higher th
The National Academy of Sciences.
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29. Col11a2 Deletion Reveals the Molecular Basis for Tectorial Membrane Mechanical Anisotropy
The tectorial membrane (TM) has a significantly larger stiffness in the radial direction than other directions, a prominent mechanical anisotropy that is believed to be critical for the proper functioning of the cochlea. To determine the molecular basis of this anisotropy, we measured material properties of TMs from mice with a targeted deletion of Col11a2,
The Biophysical Society.