Navigation Links
Prosthetic Ears Boost Hearing After Injury
Date:9/15/2008

Not only restores aesthetics, but also improves speech recognition

MONDAY, Sept. 15 (HealthDay News) -- Prosthetic ears can help improve hearing and speech recognition for people who've lost an outer ear due to injury or cancer surgery, a new U.S. study reports.

In many cases where the outer ear (pinna) has been lost, the external auditory canal is usually intact, and the remainder of the person's hearing system should function normally. "In these patients, the physician must strive not only to correct the aesthetic defect caused by the missing pinna, but also to correct the hearing loss caused by its absence," wrote Dr. William E. Walsh, of Northwestern's Feinberg School of Medicine, and colleagues.

The researchers analyzed eight different silicone rubber prosthetic ears. In the first part of the study, they attached a microphone at the entrance to a simulated ear canal on a life-sized plastic foam head. The microphone measured sound pressure levels both with and without the ear prostheses attached to the head as it was rotated 360 degrees.

On average, the prostheses improved sound pickup by 8.1 decibels (normal conversation is about 60 decibels) when the frequency of sound was 4.6 kilohertz, and by 9.7 decibels when the frequency was 11.5 kilohertz.

The second part of the study included 11 young adults with normal hearing who took part in a speech test involving simulation of hearing problems associated with the loss of an outer ear. In this test, the prosthetic ears improved speech recognition.

The findings were published in the September/October issue of the journal Archives of Facial Plastic Surgery.

"Auricular prostheses provide an acoustic gain at certain head positions and frequencies, and this acoustic gain is clinically relevant, because it benefits speech recognition in noise," the study authors wrote.

"In some individuals, auricular prostheses not only effectively restore aesthetics, but also may improve hearing. To verify the results of the present experiments, the main outcome measures described in this study will be used to obtain future measurements from individuals who wear auricular prostheses."

More information

The American Speech-Language-Hearing Association has more about hearing loss.



-- Robert Preidt



SOURCE: JAMA/Archives journals, news release, Sept. 15, 2008


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Amy Street, Certified Prosthetist and Orthotist, Joins BridgePoint Medical Partner, Charlotte Orthotic and Prosthetic Center (COPC)
2. Kaiser Permanente Team Builds Prosthetic Hands for Charity
3. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
4. Palliative Care Programs Could Boost Hospitals Bottom Line
5. Once-Weekly Diabetes Drug Boosts Blood Sugar Control
6. Height May Boost Prostate Cancer Risk, Study Suggests
7. Java gives caffeine-naive a boost, too
8. Indonesias Pharmaceutical companies Get Boost in Competitive Advantage from Launch of Newport Horizon Premium and IDRAC Solutions by Thomson Reuters
9. HRT Drug Boosts Stroke Risk in Older Women
10. Lack of Vitamin D Boosts Death Risk
11. Chickenpox Protection: Get That Booster
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/26/2016)... California (PRWEB) , ... May 26, 2016 , ... ... associated with discovery of thousands of defective respirators, according to court documents and ... the case of William and Becky Tyler v. American Optical Corporation, Case No. ...
(Date:5/26/2016)... , ... May 26, 2016 , ... On Memorial Day, ... women who lost their lives in military battle for the country. The nonprofit ... 2015 to provide more programs that empower independence for disabled military veterans, as well ...
(Date:5/26/2016)... (PRWEB) , ... May 26, 2016 , ... MadgeTech will ... designed, engineered, and manufactured in Warner, New Hampshire at the MadgeTech headquarters. With products ... reliable monitoring solutions trusted by government agencies, including NASA. , In 2012, NASA ...
(Date:5/26/2016)... ... ... In an effort to provide hair restoration information to the widest possible audience, Dr. Parsa ... not use the app. Dr. Mohebi, the founder of Parsa Mohebi Hair Restoration, is making ... , Dr. Mohebi says, “The positive response to the Snapchat videos we started last month ...
(Date:5/26/2016)... Tampa, Fla. (PRWEB) , ... May 26, 2016 , ... ... Center (AHEC) to host a six-week smoking cessation class starting June 6 at their ... AHEC’s website, http://www.gnahec.org . , Additionally, the Lung Institute has created a free ...
Breaking Medicine News(10 mins):
(Date:5/25/2016)... Germany and GERMANTOWN, Maryland , ... QGEN ; Frankfurt Prime Standard: QIA) today announced ... agreement with Therawis Diagnostics GmbH to develop and commercialize predictive ... and market PITX2 as a marker to predict effectiveness of ... patients. "We are pleased to partner with Therawis, ...
(Date:5/25/2016)... 25, 2016 As illustrated by ... this month, the numbers and momentum of cannabis in ... into the billions, more research and development push the ... State of Legal Marijuana Markets Report  from from ArcView ... much of the increase in sector is attributed to ...
(Date:5/25/2016)... England , May 25, 2016 ... company employing the precision of circulating tumour DNA ... today announces the appointment of Professor Clive ... provide medical leadership across the clinical development programme, ... Inivata,s products help deliver significant improvements in clinical ...
Breaking Medicine Technology: