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:5/4/2016)... CA (PRWEB) , ... May 04, 2016 , ... Nike ... to junior rugby in San Diego. Willis, founder of Elite Rugby Camps and current ... coaches and players every year since 2009. , “I’m excited for our eighth ...
(Date:5/4/2016)... ... 04, 2016 , ... All-Star Insurance of Northeast TX has ... of their local community. The agency pledges to select a new beneficiary every ... to bring awareness to important local causes with fundraising and other support, by ...
(Date:5/4/2016)... ... 2016 , ... Dr. Elyson and Dr. Assili, dentist in Northridge , ... tooth removal, a common dental procedure, is performed for many adolescents and young adults ... in risks of complications. By providing wisdom tooth removal surgery at their office, Dr. ...
(Date:5/4/2016)... ... , ... Francesca Loparco, Co-Founder of Queen City Dream Cars, an exotic car ... procedure at Christenbury Eye Center. The entrepreneur struggled with her computer, riding horses ... day as her in-office consultation and eye exam. Francesca’s eyesight was restored to 20/20 ...
(Date:5/4/2016)... TX (PRWEB) , ... May 04, 2016 , ... ... Nightstick all-LED multi-function small and compact tactical (6.7 inch) dual-light flashlights in models ... Las Vegas, model NSP-9842XL (average retail starting at $59.95) uses 2 included CR-123 ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... 4, 2016  It,s time for an upgrade. There are many medical recorders on ... inch LCD, the illustrious DVMAXX HD  offers unparalleled connectivity and functionality.  Ampronix  is ... world class manufacturer of innovative technology.  Photo - http://photos.prnewswire.com/prnh/20160503/363416 ... ... ...
(Date:5/4/2016)... May 4, 2016 Valeritas Holdings, ... an alternative public offering (APO). This was accomplished via ... Valeritas, Inc. and a private placement of approximately 5 ... per share. Under the terms of the ... Valeritas Holdings, Inc. will trade on the OTC Markets ...
(Date:5/4/2016)... , May 4, 2016 ... addition of the  "Global Acute lymphocytic Leukemia ...  report to their offering.       ... Global Acute Lymphocytic Leukemia Market and Competitive ... Acute Lymphocytic Leukemia pipeline products, Acute Lymphocytic ...
Breaking Medicine Technology: