Bilateral cochlear implants in children.

Area of Science:

• Audiology
• Neuroscience
• Speech-Language Pathology

Background:

• Prelingual deafness significantly impacts speech perception development.
• Cochlear implants (CIs) are a common intervention for severe to profound hearing loss.
• Bilateral CI use is increasingly explored for enhanced auditory rehabilitation.

Purpose of the Study:

• To investigate the impact of bilateral cochlear implants (CIs) on speech perception in quiet and noise.
• To evaluate speech perception performance in children with prelingual deafness using unilateral and bilateral CIs.
• To determine the correlation between duration of bilateral auditory experience and speech perception outcomes.

Main Methods:

• Eleven prelingually deaf children received bilateral CIs via a two-stage surgical technique.
• Speech perception tests in quiet and noise were conducted 4-28 months post-CI activation.
• Performance was assessed with a single CI and with bilateral CIs, with stimuli presented frontally.

Main Results:

• Children demonstrated varied improvements in speech perception in quiet and noise with bilateral CIs.
• Bilateral auditory experience duration influenced the degree of performance enhancement.
• A substantial benefit in speech perception was observed with bilateral CI use compared to unilateral.

Conclusions:

• Bilateral cochlear implants provide significant advantages for speech perception in prelingually deafened children.
• Bilateral CIs enhance auditory processing in both quiet and challenging noisy conditions.
• The findings support bilateral cochlear implantation as an effective strategy for improving communication abilities.