HOME >> BIOLOGY >> NEWS
Brain's 'hearing center' may reorganize after implant of cochlear device

WASHINGTON, DC July 23, 2007 Cochlear implantselectronic devices inserted surgically in the ear to allow deaf people to hearmay restore normal auditory pathways in the brain even after many years of deafness.

The results imply that the brain can reorganize sound processing centers or press into service latent ones based on sound stimulation. Jeanne Guiraud, PhD, and colleagues at the University of Lyon, Edouard Herriot University Hospital, and Advanced Bionics, a firm that makes cochlear implants, worked with deaf subjects from 16 to 74 years old and found that younger subjects and those with a shorter history of deafness showed changes that mirrored patterns in people with normal hearing more closely. The results were published in the July 18 Journal of Neuroscience.

"The results imply a restoration to some extent of the normal organization through the use of the cochlear implant, says Manuel Don, PhD, of the House Ear Institute in Los Angeles. They also claim to find ties between the degree of restored organization and a hearing task. Such ties are of enormous importance in evaluating cochlear implant benefits. Don was not involved in this study.

Guiraud and her team studied 13 profoundly deaf adults who had received cochlear implants, on average, eight months before the study. Electrical stimulation to the ear allowed the team to locate where in the brains auditory cortex various frequencies were processed and come up with a map for these tones. Their results demonstrated that in people who had cochlear implants for at least three months, normal frequency organization was somewhat restored.

"Our results strongly suggest that the recipients auditory cortex presents a tonotopic organization that resembles the frequency maps of normal-hearing subjects, says Guiraud.

In the future, the team hopes to determine in detail the ways in which these maps may change as a result of cochlear implants by studying subj
'"/>

Contact: Sara Harris
sharris@sfn.org
202-962-4000
Society for Neuroscience
23-Jul-2007


Page: 1 2

Related biology news :

1. Brains inertial navigation system pinpointed
2. Brains reward circuit activity ebbs and flows with a womans hormonal cycle
3. Brains fear center likely shrinks in autisms most severely socially impaired
4. Brains cannabinoid system mellows seizures
5. Brains receptors sensitive to pot may open door in treating drug dependence, brain disorders
6. Brains own cannabis compound protects against inflammation
7. Brains opioid receptorsor endorphin systemmay hold key to treatment possibilities for bulimia
8. Study suggests estrogen deficiency can lead to obesity-induced high blood pressure after menopause
9. Expert to provide update after worst tomato virus hits California
10. Losing weight after pregnancy -- diet and exercise better than diet alone
11. Cardiac patches stimulate regeneration, improve function after heart attack

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/24/2017)... , April 24, 2017 ... and partner with  Identity Strategy Partners, LLP (IdSP) ... "With or without President Trump,s March 6, 2017 ... Terrorist Entry , refugee vetting can be instilled with ... resettlement. (Right now, all refugee applications are suspended ...
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced ... will feature emerging and evolving technology through ... Innovation Summits will run alongside the expo portion of ... sessions, panels and demonstrations focused on trending topics within ... advanced design and manufacturing event will take place June ...
(Date:4/11/2017)... April 11, 2017 No two people ... at the New York University Tandon School of ... have found that partial similarities between prints are ... in mobile phones and other electronic devices can ... The vulnerability lies in the fact that fingerprint-based ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 23, 2017 , ... Firmex ... solution that makes it easy for organizations to send and gather large files ... FTP software or email file size limitations. , Using the same market-tested ...
(Date:5/23/2017)... ... May 22, 2017 , ... A new Technology Hot ... California, this August will feature high-level speakers on quantum devices, graphene electronic tattoo ... and Photonics, the largest multidisciplinary optical sciences meeting in North America, will run ...
(Date:5/23/2017)... ... ... Cambridge Semantics , the leading provider of Big Data management and ... Expo in Boston May 23-25 with a featured speaker and solution demos of ... is also a finalist for the Best of Show award. , James LaPointe, Managing ...
(Date:5/21/2017)... LOS ANGELES, CA (PRWEB) , ... May 19, ... ... at the annual meeting and educational conference of the American Association of Bioanalysts ... at the Galleria Hotel in Houston. The conference reinforces AAB’s commitment to excellence ...
Breaking Biology Technology:
Cached News: