A Sánchez del Rey

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OBJECTIVE To examine electrophysiological data from auditory brainstem responses (ABRs) and distortion product otoacoustic emissions (DPOAEs) in chickens following acoustic overstimulation. MATERIAL AND METHODS A total of 15 white 15-day-old Leghorn chickens were used. The animals were anesthetized with Equithensin, and placed with their heads in a(More)
The suppressor effect of contralateral broad-band white noise stimulation at 60 dB SPL on distortion-product otoacoustic emissions (DPOAEs) from 40 human ears was examined. The sample was composed of 9 females and 11 males, age 21-28 years. All the ears had DPOAEs. The 2-6 kHz bands had an incidence of 100%, but 0.7 kHz was found in only 27%. Eighty-eight(More)
The incidence, amplitude and frequency spectrum of transitory otoacoustic emissions (TOAE) were analyzed in a sample of 232 normal hearing ears, after click stimulation to determine normal parameters. 116 subjects, 58 female ranging in age from 18 to 30 years, mean age 23.1 years, and 58 male were from 18 to 32 years, mean 23.7 years, were included in this(More)
A microanalytical study of human auditory ossicles was performed in 11 normal adults, 13 infants, 13 foetuses, 7 middle ear cholesteatoma, 7 chronic otitis and 1 facial nerve schwannoma. Malleus and incus ossification is initiated in the foetal period, the Ca/P ratio reaching a value of 1.8-1.9 in the 29-gestation-week foetus and continues in the infant(More)
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