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:10/13/2017)... ... October 13, 2017 , ... Apple Rehab Shelton Lakes , ... mock evacuation of the facility as part of a disaster drill on October 3rd. ... EMS and Shelton City Emergency Manager, as well as the Connecticut Long Term ...
(Date:10/13/2017)... , ... October 13, 2017 , ... Ellevate Network, the ... business to advocate for action towards gender equality at their inaugural Summit in New ... the globe, and reached a social audience of over 3 million. To watch the ...
(Date:10/13/2017)... ... , ... Talented host, actor Rob Lowe, is introducing a ... episode of "Success Files," which is an award-winning educational program broadcasted on PBS ... in-depth with passion and integrity. , Sciatica occurs when the sciatic nerve in ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... “America On ... Christian identity. “America On The Brink” is the creation of published author, William ... several great-grandchildren. As a WWII veteran, he spent thirty years in the Navy. ...
(Date:10/12/2017)... LA (PRWEB) , ... October 12, 2017 , ... Planet ... in the U.S., announced today its plans to open a flagship location in Covington, ... occupy the former Rooms To Go store next to Office Depot in the Holiday ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)... 12, 2017 West Pharmaceutical Services, Inc. ... for injectable drug administration, today announced that it will ... on Thursday, October 26, 2017, and will follow with ... expectations at 9:00 a.m. Eastern Time. To participate on ... The conference ID is 94093362. ...
(Date:10/10/2017)... Calif. , Oct. 10, 2017  NDS received FDA 510(k) ... — a medical-grade battery-powered display stand specifically designed for endoscopy environments. ... transform technology into a clinical solution to support the improvement of ... Innovative Design ... Mobile Wireless Solution ...
(Date:10/4/2017)... 4, 2017  According to the Centers for Disease Control and Prevention ... . PhysicianOne Urgent Care is helping communities across Massachusetts ... , by offering no-cost* flu shots through the end of the month. ... health insurance regulations. ... to get a flu shot is by the end of October, according ...
Breaking Medicine Technology: