The long-term goal of the proposed study is to develop assessment and training strategies that maximize speech recognition in adults and children fitted with a cochlear implant (Cl). This study will focus on adult Cl users with lower than average (poor) speech recognition skills. It will capitalize on the benefits of a combined behavioral and neurophysiological approach to characterize psychophysical and speech recognition skills and construct individualized training strategies.
The specific aims are to (1) evaluate the benefit of intensive psychophysical training; (2) evaluate the benefit of intensive speech recognition training; and (3) evaluate the correlations between the neurophysiological and psychophysical responses, and speech recognition. The significance of the proposed experiments is the demonstration that in poor (i.e., below average speech recognition) adult Cl users, basic psychophysical and speech recognition skills can be improved significantly by intensive training. Previous attempts to improve the speech recognition abilities of poor to moderate implant users have shown, at best, only minimal success. However, these attempts have been extremely limited in the amount of training provided. More intensive training programs may result in larger, more consistent improvements in speech recognition. Clinically, neurophysiological responses such as auditory evoked potentials may provide important information that can be used to guide and monitor individualized training programs. Theoretically, these results will increase our understanding of central auditory system plasticity and the cortical processes and mechanisms involved in perceptual learning.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
5R01DC004792-05
Application #
6893762
Study Section
Special Emphasis Panel (ZRG1-IFCN-6 (02))
Program Officer
Donahue, Amy
Project Start
2001-05-01
Project End
2007-04-30
Budget Start
2005-05-01
Budget End
2007-04-30
Support Year
5
Fiscal Year
2005
Total Cost
$299,000
Indirect Cost
Name
House Research Institute
Department
Type
DUNS #
062076989
City
Los Angeles
State
CA
Country
United States
Zip Code
90057
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Yoon, Yang-Soo; Shin, You-Ree; Gho, Jae-Sook et al. (2015) Bimodal benefit depends on the performance difference between a cochlear implant and a hearing aid. Cochlear Implants Int 16:159-67

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