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Study findings from University of Texas provide new insights into hormones.
According to recent research from the United States, "Otoacoustic emissions (OAEs) were measured in male and female Suffolk sheep (Ovis aries). Some sheep had been administered androgens or estrogens during prenatal development, some were gonadectomized after birth, and some were allowed to develop normally."
"As previously reported for spotted hyenas, gonadectomy did not alter the OAEs for either sex; accordingly, the untreated/intact and the untreated /gonadectomized animals were pooled to form the control groups. The click-evoked otoacoustic emissions (CEOAEs) exhibited by the female control group (N= 12) were slightly stronger (effect size =0.42) than those in the male control group (N=15), which is the same direction of effect reported for humans and rhesus monkeys. Females administered testosterone prenatally (N= 16) had substantially weaker (masculinized) CEOAEs than control females (effect size=1.15). Both of these outcomes are in accord with the idea that prenatal exposure to androgens weakens the cochlear mechanisms that underlie the production of OAEs. The CEOAEs of males administered testosterone prenatally (N=5) were not different from those of control males, an outcome also seen in similarly treated rhesus monkeys. Males administered dihydrotestosterone (DHT) ...
- Otoacoustic emissions in patients with retrocochlear dysfunction: A report of...
- Magazine article from: Ear, Nose and Throat Journal Ried, Ernesto U. Ried, Ernesto G. Aviles, Monica June 1, 2000 700+ words
...article describes the results of otoacoustic emissions testing in five patients with...that all five had spontaneous otoacoustic emissions and/or distortion product otoacoustic emissions. Pharmacologic treatment with...
- Effect of tympanic perforations on the detection of distortion-product...
- Magazine article from: Ear, Nose and Throat Journal LeBourgeois III, H. Wadsworth Anand, Vinod K. McAuley, James R. Dickman, J. David Malphurs, Jr., Ojus August 1, 2000 700+ words
...detection of distortion-product otoacoustic emissions (DPOAEs) depends on the viability...potential uses of DPOAEs. Introduction Otoacoustic emissions have been the subject of considerable...reported by Kemp in 1979. [6] Otoacoustic emissions are the result of an active process...
- Otoacoustic emissions: a valid, efficient first-line hearing screen for...
- Magazine article from: Journal of School Health Yin, Larry Bottrell, Christine Clarke, Noreen Shacks, Janice Poulsen, Marie K. April 1, 2009 700+ words
...screening in the preschool populations poses some concern. Otoacoustic emissions (OAEs) are the natural byproducts of sound processing by the cochlea. Transient evoked otoacoustic emissions (TEOAEs) are the sounds emitted by the cochlea in...
- Using the sounds of hearing. (otoacoustic emissions used to evaluate hearing...
- Magazine article from: Science News Peterson, Ivars February 27, 1993 700+ words
...themselves produce faint sounds, which are known as otoacoustic emissions. By listening to these feeble signals, researchers...for screening infants and young children. To detect otoacoustic emissions, researchers insert a miniature probe -- which looks...
- ENG, sinusoidal vertical-axis rotation, and otoacoustic emissions testing in a...
- Magazine article from: Ear, Nose and Throat Journal Brookler, Kenneth H. Hamid, Mohamed A. June 1, 2007 700+ words
...stapedial reflexes were produced. Distortion product otoacoustic emissions testing revealed a more robust and wide range of responses...were consistent with otosclerosis. * Distortion product otoacoustic emissions testing revealed lesser findings on the right, which...
- Newborn Screening Device Combines OAE And ABR.(Everest Biomedical Instruments...
- Newspaper article from: Medical Devices & Surgical Technology Week November 11, 2001 700+ words
...Instruments Co. has introduced the AUDIOscreener, a portable computer-independent device that combines evoked otoacoustic emissions (OAE) and auditory brainstem response (ABR) tests for a simple newborn hearing screening. The AUDIOscreener...
- Newborn Screening Device Combines OAE And ABR.(Everest Biomedical Instruments...
- Newspaper article from: Health & Medicine Week November 5, 2001 700+ words
...Instruments Co. has introduced the AUDIOscreener, a portable computer-independent device that combines evoked otoacoustic emissions (OAE) and auditory brainstem response (ABR) tests for a simple newborn hearing screening. The AUDIOscreener...
- Nannette C. Nicholson has received the Student Research Award from the American...
- Magazine article from: Arkansas Business January 19, 2004 700+ words
...Student Research Award from the American Academy of Audiology for her doctoral research on transient-evoked otoacoustic emissions. Nicholson also has received a grant from Widex Corp. to provide digital hearing aids for children up to three...
