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Early Auditory Stimulation, Not Device Type: Comparable Cortical Maturation in Children Using Cochlear Implants or Hearing Aids
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Early Auditory Stimulation, Not Device Type: Comparable Cortical Maturation in Children Using Cochlear Implants or Hearing Aids
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Journal Article
Early Auditory Stimulation, Not Device Type: Comparable Cortical Maturation in Children Using Cochlear Implants or Hearing Aids
2026
Overview
Introduction: The present study aimed to compare cortical auditory maturation, as reflected by P1 latency of cortical auditory evoked potentials (CAEPs), in children with congenital severe-to-profound sensorineural hearing loss rehabilitated with unilateral cochlear implants (CIs) or bilateral conventional hearing aids (HAs). Materials and Methods: Eighty-five children with congenital severe-to-profound sensorineural hearing loss were included in this retrospective comparative study. Participants were divided into two groups: unilateral CI users (n = 42) and bilateral HA users (n = 43). All children were fitted with their devices before 48 months of age and achieved aided free-field thresholds between 30 and 50 dB HL. CAEPs were recorded using the Fonix® HEARLab System with speech stimuli (/m/, /g/, /t/) presented at 55 dB SPL. P1 latency values were measured and compared between groups using independent samples t-tests. Correlation analyses were performed to assess the relationship between duration of device use and P1 latency. Results: Eighty-five children were included (CI: n = 42; HA: n = 43). Mean P1 latency values did not differ significantly between groups for the /m/ stimulus (126.4 ± 29.13 ms vs. 126.4 ± 29.28 ms, p = 1.00), /g/ stimulus (106.5 ± 26.46 ms vs. 110.1 ± 29.49 ms, p = 0.55), or /t/ stimulus (114.7 ± 22.93 ms vs. 118.5 ± 27.19 ms, p = 0.48). Age at device fitting was comparable between groups (27.95 ± 9.10 vs. 26.88 ± 14.15 months, p = 0.68). The duration of device use was significantly longer in the HA group (48.02 ± 28.39 months) compared to the CI group (26.00 ± 15.92 months) (p < 0.001). Correlation analysis revealed no significant association between duration of device use and P1 latency for any stimulus (/m/: p = 0.28; /g/: p = 0.17; /t/: p = 0.09). Conclusions: When devices were fitted before 48 months of age and aided thresholds were optimized, unilateral cochlear implantation and bilateral conventional hearing aids showed comparable P1 latency values as an index of cortical auditory maturation. These findings suggest that early and adequate auditory stimulation may play an important role in supporting cortical auditory development in children with congenital hearing loss, although results should be interpreted within the context of individualized clinical management.
Publisher
MDPI AG,Multidisciplinary Digital Publishing Institute (MDPI)
Subject
