Cochlear Implants (CI)

Cochlear Implants (CI)

Aging and Speech Perception

Jin, Liu, and Sladen reported on the 1988 Working Group on Speech Understanding and Aging Committee on Hearing, Bioacoustics and Biomechanics (CHABA), which stated three likely factors for age-related listening problems: (1) changes in the peripheral auditory system, (2) changes in central auditory processing, and (3) changes in cognitive performance.

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Expanding Cochlear Implant Criteria?

Hughes et al (2014) retrospectively evaluated post-cochlear implant (CI) performance for CI recipients who had better hearing than the established FDA criteria. Charts from 37 patients (26 adults, 11 children) from 1991 to 2013 were included and three groups were established as follows.

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Cochlear Implantation with a Normal Hearing Contralateral Ear

Blasco and Redleaf (2014) note that otologists around the world have used cochlear implants (CIs) as an effective therapy for people presenting with severe-to-profound sudden sensorineural hearing loss (SSNHL) even though the contralateral ear presents with normal hearing. Blasco and Redleaf report that more traditional therapies such as bone-anchored devices and contralateral routing of signal (CROS) provide only minimal benefit for users and those users do worse in noisy backgrounds. 

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Hybrid Cochlear Implants and Localization

Lammers et al (2014) evaluated 18 subjects who had bilateral low-frequency hearing and were implanted with a hybrid cochlear implant (HCI). The authors note that when traditional cochlear implants (CIs) localize sound they depend on interaural loudness differences (ILDs). The authors queried whether the additional low-frequency acoustic information provided through HCI would provide additional localization cues through interaural timing differences (ITDs).

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Cochlear Implants in Children with Additional Developmental Disabilities

Wakil et al (2014) report long-term benefits of cochlear implantation for 21 children with complex disabilities via a retrospective chart review. Children in their study had been implanted prior to 2004 and have been followed between 7 and 19 years. Of note, previous reports indicate perhaps some 40 percent of children with sensorineural hearing loss (SNHL) have co-morbid medical or developmental issues.

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