Reversal of age-related neural timing delays with training

Samira Anderson, Travis White-Schwoch, Alexandra Parbery-Clark, Nina Kraus*

*Corresponding author for this work

Research output: Contribution to journalArticle

123 Scopus citations

Abstract

Neural slowing is commonly noted in older adults, with consequences for sensory, motor, and cognitive domains. One of the deleterious effects of neural slowing is impairment of temporal resolution; older adults, therefore, have reduced ability to process the rapid events that characterize speech, especially in noisy environments. Although hearing aids provide increased audibility, they cannot compensate for deficits in auditory temporal processing. Auditory training may provide a strategy to address these deficits. To that end, we evaluated the effects of auditory-based cognitive training on the temporal precision of subcortical processing of speech in noise. After training, older adults exhibited faster neural timing and experienced gains in memory, speed of processing, and speech-in-noise perception, whereas a matched control group showed no changes. Training was also associated with decreased variability of brainstem response peaks, suggesting a decrease in temporal jitter in response to a speech signal. These results demonstrate that auditory-based cognitive training can partially restore age-related deficits in temporal processing in the brain; this plasticity in turn promotes better cognitive and perceptual skills.

Original languageEnglish (US)
Pages (from-to)4357-4362
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume110
Issue number11
DOIs
StatePublished - Mar 12 2013

Keywords

  • Aging
  • Neuroplasticity

ASJC Scopus subject areas

  • General

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