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The Neural Representation Of Frequency In Quiet And Noise Across The Adult Life Span, Alexandra Bove
The Neural Representation Of Frequency In Quiet And Noise Across The Adult Life Span, Alexandra Bove
Dissertations, 2014-2019
The purpose of the present study was to examine why older adults have trouble with speech-in-noise understanding. Difficulty with speech-in-noise comprehension has been associated with age-related degradation in frequency processing. Our study sought to investigate this relationship by examining the neural representation of frequency in quiet and in noise across the adult-life span. In order to do this, one behavioral correlate of frequency processing, frequency difference limens (FDLs), and one electrophysiological correlate, the frequency following response (FFR), was utilized. In the present study, we specifically focus on the electrophysiological measures of frequency processing across the adult life span. It was …
Release From Masking: Behavioral And Physiological Masking Level Differences, Sarah L. Hodgson
Release From Masking: Behavioral And Physiological Masking Level Differences, Sarah L. Hodgson
Dissertations, 2014-2019
Binaural hearing offers several advantages over monaural hearing and is believed to be one factor that is involved in the ability to understand speech in background noise. Binaural hearing involves analysis of interaural timing and intensity differences in signals arriving at the two ears which provides listeners with sound localization cues as well as signal in noise detection. When sounds arrive at each ear at slightly different times, there may be a release from the effects of background noise, allowing listeners to detect softer sounds in noise. Masking Level Differences (MLDs) have been widely used to evaluate behavioral binaural processing. …