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Distractions In Hearing: Measuring Impulsivity In Service Members With A Mtbi, Kathleen Margaret Chopra
Distractions In Hearing: Measuring Impulsivity In Service Members With A Mtbi, Kathleen Margaret Chopra
Dissertations, 2014-2019
One of the cognitive symptoms associated with the diagnosis of a mild traumatic brain injury (mTBI) is the degradation of focus and attention. This pilot study was designed to quantify examples of such capabilities in Service Members diagnosed with mTBI and to compare their abilities to peers without an mTBI diagnosis. Specifically, we compared participant groups on their false alarm rates and thresholds for contralateral and informational masking tasks to document the participants’ ability to focus and detect an auditory stimulus in the presence of distracting maskers. In this study, comparing the overall performance of Service Members, with and without …
Effects Of Speech Signal Type And Attention On Acceptable Noise Level In Elderly, Hearing-Impaired Listeners, Jennifer Susan Mundorff
Effects Of Speech Signal Type And Attention On Acceptable Noise Level In Elderly, Hearing-Impaired Listeners, Jennifer Susan Mundorff
Dissertations, 2014-2019
The primary objective of this study was to determine if acceptable noise levels (ANLs) in elderly, hearing-impaired listeners were dependent on speech intelligibility and listener attention levels. Acceptable noise levels (ANLs), expressed in decibels, is defined as the maximum background noise level that is acceptable while listening to and following a story. Connected speech test (CST) sentences were recorded with clear speech, conversational speech and temporally altered, fast-rate speech. Thirty-five, elderly, hearing-impaired individuals (61-97 years, M=75) with symmetrical, bilateral sensorineural hearing loss participated. Most comfortable listening levels (MCL) and background noise level (BNL) measurements were completed for each speech stimulus …