Training changes processing of speech cues in older adults with hearing loss
Open Access
- 1 January 2013
- journal article
- research article
- Published by Frontiers Media SA in Frontiers in Systems Neuroscience
- Vol. 7, 64779
- https://doi.org/10.3389/fnsys.2013.00097
Abstract
Aging results in a loss of sensory function, and the effects of hearing impairment can be especially devastating due to reduced communication ability. Older adults with hearing loss report that speech, especially in noisy backgrounds, is uncomfortably loud yet unclear. Hearing loss results in an unbalanced neural representation of speech: the slowly-varying envelope is enhanced, dominating representation in the auditory pathway and perceptual salience at the cost of the rapidly-varying fine structure. We hypothesized that older adults with hearing loss can be trained to compensate for these changes in central auditory processing through directed attention to behaviorally-relevant speech sounds. To that end, we evaluated the effects of auditory-cognitive training in older adults (ages 55-79) with normal hearing and hearing loss. After training, the auditory training group with hearing loss experienced a reduction in the neural representation of the speech envelope presented in noise, approaching levels observed in normal hearing older adults. No changes were noted in the control group. Importantly, changes in speech processing were accompanied by improvements in speech perception. Thus, central processing deficits associated with hearing loss may be partially remediated with training, resulting in real-life benefits for everyday communication.Keywords
This publication has 58 references indexed in Scilit:
- Effects of hearing loss on the subcortical representation of speech cuesThe Journal of the Acoustical Society of America, 2013
- Reversal of age-related neural timing delays with trainingProceedings of the National Academy of Sciences, 2013
- Auditory Brainstem Response to Complex Sounds Predicts Self-Reported Speech-in-Noise PerformanceJournal of Speech, Language, and Hearing Research, 2013
- Aging Affects Neural Precision of Speech EncodingJournal of Neuroscience, 2012
- Methods to Eliminate Stimulus Transduction Artifact From Insert Earphones During ElectroencephalographyEar & Hearing, 2012
- Subcortical Plasticity Following Perceptual Learning in a Pitch Discrimination TaskJournal of the Association for Research in Otolaryngology, 2010
- Perception of temporal fine-structure cues in speech with minimal envelope cues for listeners with mild-to-moderate hearing lossInternational Journal of Audiology, 2010
- Aging alters the perception and physiological representation of frequency: Evidence from human frequency-following response recordingsHearing Research, 2009
- Envelope and spectral frequency-following responses to vowel soundsHearing Research, 2008
- The National Acoustic Laboratoriesʼ (NAL) New Procedure for Selecting the Gain and Frequency Response of a Hearing AidEar & Hearing, 1986