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Updated: Oct 16, 2025
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Spectral Modulation Detection Performance and Speech Perception in Pediatric Cochlear Implant Recipients
Lisa S Davidson1, Ann E Geers2, Rosalie M Uchanski1
1Department of Otolaryngology, Washington University School of Medicine in St. Louis, MO.
Insights
Pediatric cochlear implant (CI) recipients show lower spectral modulation detection (SMD) than typically hearing peers, but both groups improve with age. SMD ability significantly predicts speech perception, especially for complex sounds.
Area of Science:
- Auditory Neuroscience
- Speech Perception Research
- Pediatric Audiology
Background:
- Cochlear implants (CIs) aim to restore hearing in deaf individuals.
- Spectral modulation detection (SMD) is crucial for speech understanding.
- Understanding factors affecting SMD in pediatric CI users is vital.
Purpose of the Study:
- To assess age-related spectral modulation detection (SMD) in pediatric cochlear implant (CI) users compared to typically hearing (TH) peers.
- To identify factors influencing SMD in pediatric CI recipients.
- To determine the impact of SMD on speech perception abilities.
Main Methods:
- 104 pediatric CI users and 38 TH peers (ages 6-11) underwent SMD testing.
- CI users also completed speech perception, nonverbal intelligence, and working memory tests.
- Regression analyses examined group, age, and individual factors' effects on SMD and speech perception.
Main Results:
- Typically hearing peers outperformed CI users in SMD.
- Both groups demonstrated improved SMD with increasing age.
- Age and nonverbal intelligence were key predictors of SMD in CI users.
- SMD significantly predicted both segmental and suprasegmental speech perception, with a stronger link to suprasegmental perception.
Conclusions:
- Pediatric CI users generally exhibit lower SMD than TH peers.
- The rate of SMD improvement with age was similar between groups.
- Nonverbal intelligence impacts SMD performance in CI users.
- SMD is a valuable predictor of speech perception, particularly for complex auditory information, offering insights into CI benefits.
Purpose:
The aims of this study were, for pediatric cochlear implant (CI) recipients, (a) to determine the effect of age on their spectral modulation detection (SMD) ability and compare their age effect to that of their typically hearing (TH) peers; (b) to identify demographic, cognitive, and audiological factors associated with SMD ability; and (c) to determine the unique contribution of SMD ability to segmental and suprasegmental speech perception performance.
Method:
A total of 104 pediatric CI recipients and 38 TH peers (ages 6-11 years) completed a test of SMD. CI recipients completed tests of segmental (e.g., word recognition in noise and vowels and consonants in quiet) and suprasegmental (e.g., talker discrimination, stress discrimination, and emotion identification) perception, nonverbal intelligence, and working memory. Regressions analyses were used to examine the effects of group and age on percent-correct SMD scores. For the CI group, the effects of demographic, audiological, and cognitive variables on SMD performance and the effects of SMD on speech perception were examined.
Results:
The TH group performed significantly better than the CI group on SMD. Both groups showed better performance with increasing age. Significant predictors of SMD performance for the CI group were age and nonverbal intelligence. SMD performance predicted significant variance in segmental and suprasegmental perception. The variance predicted by SMD performance was nearly double for suprasegmental than for segmental perception.
Conclusions:
Children in the CI group, on average, scored lower than their TH peers. The slopes of improvement in SMD with age did not differ between the groups. The significant effect of nonverbal intelligence on SMD performance in CI recipients indicates that difficulties inherent in the task affect outcomes. SMD ability predicted speech perception scores, with a more prominent role in suprasegmental than in segmental speech perception. SMD ability may provide a useful nonlinguistic tool for predicting speech perception benefit, with cautious interpretation based on age and cognitive function.
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