Navigation Links
UT Dallas study sheds light on how infants understand speech
Date:5/19/2014

A new study from a UT Dallas researcher demonstrates the importance of considering developmental differences when creating programs for cochlear implants in infants.

Dr. Andrea Warner-Czyz, assistant professor in the School of Behavioral and Brain Sciences, recently published the research in the Journal of the Acoustical Society of America.

"This is the first study to show that infants process degraded speech that simulates a cochlear implant differently than older children and adults, which begs for new signal processing strategies to optimize the sound delivered to the cochlear implant for these young infants," Warner-Czyz said.

Cochlear implants, which are surgically placed in the inner ear, provide the ability to hear for some people with severe to profound hearing loss. Because of technological and biological limitations, people with cochlear implants hear differently than those with normal hearing.

Think of a piano, which typically has 88 keys with each representing a note. The technology in a cochlear implant can't play every key, but instead breaks them into groups, or channels. For example, a cochlear implant with 22 channels would put four notes into each group. If any keys within a group are played, all four notes are activated. Although the general frequency can be heard, the fine detail of the individual notes is lost.

Two of the major components necessary for understanding speech are the rhythm and the frequencies of the sound. Timing remains fairly accurate in cochlear implants, but some frequencies disappear as they are grouped.

More than eight or nine channels do not necessarily improve the hearing of speech in adults. This study is one of the first to examine how this signal degradation affects hearing speech in infants.

Infants pay greater attention to new sounds, so researchers compared how long a group of 6-month-olds focused on a speech sound they were familiarized with "tea"' to a new speech sound, "ta."

The infants spent more time paying attention to "ta," demonstrating they could hear the difference between the two. Researchers repeated the experiment with speech sounds that were altered to sound as if they had been processed by a 16- or 32-channel cochlear implant.

The infants responded to the sounds that imitated a 32-channel implant the same as when they heard the normal sounds. But the infants did not show a difference with the sounds that imitated a 16-channel implant.

"These results suggest that 6-month-old infants need less distortion and more frequency information than older children and adults to discriminate speech," Warner-Czyz said. "Infants are not just little versions of children or adults. They do not have the experience with listening or language to fill in the gaps, so they need more complete speech information to maximize their communication outcomes."

Clinicians need to consider these developmental differences when working with very young cochlear implant recipients, Warner-Czyz said.


'/>"/>

Contact: Ben Porter
ben.porter@utdallas.edu
972-883-2193
University of Texas at Dallas
Source:Eurekalert  

Related medicine news :

1. Texas Back Institute Becomes Official Spine Specialist for FC Dallas and the Frisco RoughRiders
2. Dallas-Fort Worth Brace for West Nile Spraying
3. Dallas, Fort Worth Brace for West Nile Spraying
4. UT Dallas engineers identify material that reduces pollution from diesel engines
5. Dallas Launches Insecticide Spraying Against West Nile Virus
6. UT Southwestern named the official health care team of the Dallas Stars
7. Group Insurance Brokers Give Back to Dallas Non-Profits and Military Fund
8. Artisan Business Group to Host EB-5 Investment Workshop in Dallas January 16, 2013
9. Eco Smart Energy, LLC Successfully Installs Eco-Friendly, Cost Saving Sun Equinox System at Dallas Stars’ Dr. Pepper StarCenter
10. Del Taco Connects With Itxtdeals.com to Expand Text Message Marketing to Dallas-Fort Worth
11. Students in Educational First Steps Assisted Centers Show Persistent Benefits Far Beyond Early Childhood According to University of Texas at Dallas Study
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
UT Dallas study sheds light on how infants understand speech
(Date:12/7/2016)... (PRWEB) , ... December 07, 2016 , ... Sharon Kleyne, ... Global Climate Change and Your Health on Voice of America, declared on her radio ... call attention to the fact that when these bullies attack leaders in corporate America, ...
(Date:12/7/2016)... ... 07, 2016 , ... Delete® - Tattoo Removal and Laser Salon Offers Delightful ... Save Up To 33% Off Botox® and Juvederm® Products Now Through December 31, 2016 ... Delightful Deals on Botox® and Juvederm® just in time for the holiday ...
(Date:12/7/2016)... , ... December 07, 2016 , ... The medical profession ... and winter seasons. One major study analyzing heart attacks among 138,602 people recorded ... of a given year. We would all agree of course–no time of year is ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... WellnessPro Plus for consumers and healthcare professionals to manage chronic and acute ... the treatment modalities available in a single device. The announcement is part ...
(Date:12/7/2016)... ... ... “Tomorrow Trump Goes To Washington”: a brief but engaging illustration depicting the ... “Tomorrow Trump Goes To Washington” is the creation of published author, Nancy Engestrom, a ... Nancy attributes her patriotic nature to her WWII veteran father. She says, “I ...
Breaking Medicine News(10 mins):
(Date:12/6/2016)... , Dec. 6, 2016 Radioisotopes are radioactive ... are produced either by using nuclear research reactor or ... form of alpha, beta or gamma when changed to ... used in Nuclear medicine, specifically in medical diagnostics. In ... information about a human body,s functioning. Radiotherapy is also ...
(Date:12/6/2016)... Human Vaccines Market: Scope and Methodology ... country wise analysis of the human vaccines market. ... vaccines products, raw material suppliers, vaccine processing companies, ... The report provides qualitative and quantitative analysis ... comprises market dynamics, trends, product overview, and country-level ...
(Date:12/6/2016)... 2016 Two new disaster drones delivered telemedical ... mass casualty event Tuesday at John Bell Airport in ... before an audience including Mississippi ... Security, Federal Law Enforcement Agencies, and the United Nations. ... (Health Integrated Rescue Operations), was developed by Italo ...
Breaking Medicine Technology: