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High-probability grants
According to our matching algorithm, Susan E. Teubner-Rhodes is the likely recipient of the following grants.
| Years |
Recipients |
Code |
Title / Keywords |
Matching
score |
| 2017 — 2021 |
Teubner-Rhodes, Susan Elizabeth |
R21Activity Code Description:
To encourage the development of new research activities in categorical program areas. (Support generally is restricted in level of support and in time.) |
Understanding Cognitive and Neurobiological Factors of Age-Related Speech Recognition Declines @ Medical University of South Carolina
Older adults, even those with relatively normal hearing, have trouble recognizing speech in background noise. Consequently, older adults often have difficulty engaging in normal conversations and therefore experience a diminished quality of life. In order to adequately remedy such communication impairments, we need to understand factors beyond the peripheral auditory system that impact communication in older adults. In particular, inhibitory control, the ability to suppress irrelevant information, may help the listener ignore background noise and facilitate identification of a target word by inhibiting similar-sounding but inappropriate alternatives. The goal of this project is to better understand the role of inhibitory control in speech recognition by 1) delineating the neural mechanisms that support speech recognition in noise for older adults with varying inhibitory control abilities and 2) driving the inhibitory control system to assess its direct impact on moment-to- moment word recognition. This project will inform the rehabilitation of communication in the aging adult population by investigating how inhibitory control contributes to understanding speech in noise. This proposal aims to determine how the availability and moment-to-moment recruitment of inhibitory control affects speech recognition in noise among older adults. Stimulus competition will be used to induce inhibitory control in older adults with high versus low inhibitory control in order to characterize the support of neural systems for speech recognition on a subsequent trial using fMRI. Using the phenomenon of conflict adaptation, wherein competing information leads to the recruitment of inhibitory control and boosts performance on subsequent trials, this project will determine the extent to which experiencing audiovisual conflict increases correct word identification. Moreover, by comparing performance and neural activity in adults with high versus low inhibitory control, this study will investigate the extent to which reduced inhibitory control contributes to age-related declines in speech comprehension. The results of this research will advance our understanding of how inhibitory control supports speech recognition in older adults. The results are expected to identify novel methods to enhance communication and identify individuals who will most benefit from treatments for hearing loss and who may require inhibitory control training as an intervention to improve speech comprehension.
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