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Updated: Jan 25, 2026
06:04
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
777
Age-Related Changes in Temporal Resolution Revisited: Electrophysiological and Behavioral Findings From Cochlear
Bruna S S Mussoi1, Carolyn J Brown2
1Speech Pathology and Audiology, Kent State University, Kent, Ohio, USA.
Ear and Hearing
|April 30, 2019
Summary
Age did not significantly impact speech perception in cochlear implant (CI) users. However, working memory, specifically digit span, was linked to better speech perception in noise for CI users.
Area of Science:
- Auditory Neuroscience
- Speech Perception Research
- Cochlear Implant Technology
Background:
- Age-related declines in temporal resolution are linked to speech perception difficulties.
- Cochlear implants (CIs) allow direct auditory nerve stimulation, bypassing the cochlea.
- CI technology enables manipulation of temporal signal properties.
Purpose of the Study:
- To evaluate age-related changes in temporal resolution among CI users.
- To investigate the influence of temporal resolution and cognitive factors on speech perception in noise within this population.
Main Methods:
- Cross-sectional study of 20 postlingually deafened Nucleus CI users (younger vs. older groups).
- Assessed peripheral (ECAP recovery) and central (ACC, gap detection) temporal resolution.
- Measured cognitive function (processing speed, working memory) and speech perception in noise (QuickSIN).
Main Results:
- Only ECAP recovery using pulse train maskers showed significant age effects, with younger participants exhibiting faster neural recovery.
- No significant age-related differences were found in speech perception.
- Digit span (working memory) was the sole cognitive measure correlated with speech perception performance across all participants.
Conclusions:
- Limited age effects on temporal resolution were observed in CI users, potentially due to electrical stimulation bypassing peripheral auditory processing.
- Improved neural synchrony with electrical stimulation may enhance temporal cue perception for all CI users.
- Working memory plays a crucial role in understanding degraded speech, supporting existing literature.
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