Journal
HEARING RESEARCH
Volume 264, Issue 1-2, Pages 63-69Publisher
ELSEVIER
DOI: 10.1016/j.heares.2010.03.002
Keywords
Aging; Temporal resolution; Neural correlates; Animal models
Funding
- NATIONAL INSTITUTE ON AGING [P01AG009524] Funding Source: NIH RePORTER
- NIA NIH HHS [P01 AG009524] Funding Source: Medline
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This summary article reviews the literature on neural correlates of age-related changes in temporal processing in the auditory brainstem. Two types of temporal processing dimensions are considered, (i) static, which can be measured using a gap detection or forward masking paradigms, and (ii) dynamic, which can be measured using amplitude and frequency modulation. Corresponding data from physiological studies comparing neural responses from young and old animals using acoustic stimuli as silent gaps-in-noise, amplitude modulation, and frequency modulation are considered in relation to speech perception. Evidence from numerous investigations indicates an age-related decline in encoding of temporal sound features which may be a contributing factor to the deficits observed in speech recognition in many elderly listeners. (C) 2010 Elsevier B.V. All rights reserved.
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