Marking time: The precise measurement of auditory gap detection across the lifespan

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Abstract

Deficits of temporal resolution are thought to contribute to speech understanding in noise difficulties and may be documented using auditory gap detection thresholds (GDTs). It is important to establish the appropriate methods to measure GDTs clinically. The USF Psychoaoustics Lab has established GDTs for a variety of stimuli, ages (7-90 years), equipment, degrees of hearing loss, psychophysical paradigms, neurophysiological paradigms, marker relationships (within-channel, across-channel), time points, and presentation ears (left, right, diotic). A number of important findings are discussed: 1. Best stimulus for measurement of GDTs is narrow-band noise. 2. GDTs improve from 7 to 9 years of age, stabilize between 9 and 40 years of age, and deteriorate with age thereafter. 3. GDTs may be measured reliably using a variety of equipment. 4. Hearing loss has a minor impact on GDTs. 5. A 2-interval psychophysical paradigm may be used to measure GDTs. 6. GDTs may be documented using the P1-N1-P2 auditory evoked potential. 7. Across-channel GDTs provide different information than within-channel GDTs. 8. GDTs are reliable within and across test sessions. 9. GDTs do not differ across ear conditions. A stable and sensitive measure of temporal resolution that may be used in a clinical setting to assess temporal resolution is recommended and discussed.

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APA

Fulton, S. E., & Lister, J. J. (2016). Marking time: The precise measurement of auditory gap detection across the lifespan. In Proceedings of Meetings on Acoustics (Vol. 29). Acoustical Society of America. https://doi.org/10.1121/2.0000466

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