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High-probability grants
According to our matching algorithm, Jennifer J. Lentz is the likely recipient of the following grants.
Years |
Recipients |
Code |
Title / Keywords |
Matching score |
2002 — 2004 |
Lentz, Jennifer J |
R03Activity Code Description: To provide research support specifically limited in time and amount for studies in categorical program areas. Small grants provide flexibility for initiating studies which are generally for preliminary short-term projects and are non-renewable. |
Complex Sound Segregation by Hearing-Impaired Listeners @ Indiana University Bloomington
DESCRIPTION (provided by applicant): This research application focuses on whether cochlear-hearing loss has a detrimental effect on sound segregation, resulting in added difficulty discriminating between complex sounds. Two cues that may facilitate segregation of sound sources in normal-hearing listeners will be investigated: differences in temporal properties and different sound onsets. The program follows a model of auditory processing assuming that the auditory system first groups particular characteristics of sound to form "auditory objects." Once an object has been formed, different characteristics of that sound can be evaluated for identification, discrimination, etc. One particular aspect of sound, its spectral shape, is important to the understanding of speech, and the abilities of hearing-impaired listeners to segregate sounds for the purposes of spectral shape discrimination will be evaluated here. Listeners will be asked to detect changes in the spectral shape of a target sound in the presence of a distractor sound. Cues that encourage perceptual segregation will be manipulated to allow the auditory system to segregate the distractor from the target, thereby permitting clear spectral analysis of the target. If sound segregation occurs, the listener will be able to discriminate spectral shapes as if the distractor is not present. In contrast, sensitivity to spectral shape is likely to be poor if the target and distractor are not segregated. Various segregation cues will be manipulated and their effects on the ability to segregate competing sounds will be evaluated in listeners with normal and impaired hearing. Knowledge of how sounds can be segregated, especially in the presence of cochlear damage, may provide a better understanding of why people with hearing loss have difficulty recognizing speech in noisy environments containing multiple sound sources. Future work will be directed toward the cues that encourage good sound segregation, and therefore more normal analysis of spectral shape, to suggest new directions in amplification schemes.
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1 |
2014 — 2015 |
Lentz, Jennifer J |
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.) |
Behavioral Assessment of Tinnitus @ Indiana University Bloomington
DESCRIPTION (provided by applicant): Tinnitus, the perception of sound in the absence of an external stimulus, is estimated to affect over 1/6 of the American population. The impact of tinnitus on an individual's quality of life can be significant, often negatively influencing vocatinal achievement and emotional and social well-being. Yet despite the high prevalence of tinnitus and its potentially debilitating effects on those who have it, the tools used in modern audiology for tinnitus assessment are wholly inadequate. Diagnosis of tinnitus continues to be based on self-report and descriptions of the tinnitus percept using poorly defined verbal terminology. The studies presented here are intended to fill this critical void with new behavioral tools to diagnos and characterize tinnitus. We will develop, for the first time, an objective behavioral test using adaptations of well-established psychoacoustical methods to identify the presence of tinnitus. We will also improve a patient's ability to describe his tinnitus by applying well-grounded modern methods of cognitive psychology to the evaluation of tinnitus. This approach is innovative because these tools have never been applied to tinnitus assessment. This approach is significant because it will address substantial limitations in tinnitus diagnostics. The outcomes o this project have the potential to form a framework that will guide implementation of these tools in a clinical setting.
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1 |