Can cochlear implantation improve neurocognition in the aging population?

  • \(\textbf {Introduction:}\) The relationship between cognition and the ability to hear is well known. Due to changes in demographics, the number of people with sensorineural hearing loss and cognitive impairment is increasing. The aim of this study was to identify the impact of hearing rehabilita¬tion via cochlear implantation on cognitive decline among the aging population. \(\textbf {Patients and methods:}\) This prospective study included 60 subjects aged between 50 and 84 years (mean 65.8 years, SD=8.9) with a severe to profound bilateral hearing impairment. A computer-based evaluation of short- and long-term memory, processing speed, attention, working memory and inhibition was performed prior to surgery as well as 6 and 12 months after cochlear implantation. Additionally, speech perception at 65 and 80 dB (Freiburger monosyl-labic speech test) as well as disease-related (Nijmegen Cochlear Implant Questionnaire) and general (WHOQOL-OLD) quality of life were assessed. \(\textbf {Results:}\) Six months postimplantation, speech perception, quality of life and also neurocogni¬tive abilities significantly increased. The most remarkable improvement after 6 months was detected in executive functions such as attention (\(\it p\)<0.001), inhibition (\(\it p\)=0.025) and working memory (n-back: \(\it p\)=0.002; operation span task: \(\it p\)=0.008), followed by delayed recall (\(\it p\)=0.03). In contrast, long-term memory showed a significant change of performance only after 12 months (\(\it p\)=0.021). After 6 months, most cognitive domains remained stable, except working memory assessed by the operation span task, which significantly improved between 6 and 12 months (\(\it p\)<0.001). No correlation was found between cognitive results and duration of deafness, speech perception or quality of life. \(\textbf {Conclusion:}\) Cochlear implantation does not only lead to better speech perception and quality of life, but has also been shown to improve cognitive skills in hearing impaired adults aged 50 years or more. These effects seem to be independent of each other.

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Metadaten
Author:Christiane VölterORCiDGND, Lisa GötzeORCiDGND, Stefan DazertORCiDGND, Michael FalkensteinORCiDGND, Jan Peter ThomasORCiDGND
URN:urn:nbn:de:hbz:294-59951
DOI:https://doi.org/10.2147/CIA.S160517
Parent Title (English):Clinical interventions in aging
Document Type:Article
Language:English
Date of Publication (online):2018/07/19
Date of first Publication:2018/04/20
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Tag:Open Access Fonds
aging; cochlear implantation; hearing rehabilitation; neurocognition
Volume:2018
Issue:13
First Page:701
Last Page:712
Note:
Article Processing Charge funded by the Deutsche Forschungsgemeinschaft (DFG) and the Open Access Publication Fund of Ruhr-Universität Bochum.
Institutes/Facilities:St. Elisabeth-Hospital Bochum, Klinik für Hals- Nasen- Ohrenheilkunde, Kopf- und Halschirurgie
Dewey Decimal Classification:Technik, Medizin, angewandte Wissenschaften / Medizin, Gesundheit
open_access (DINI-Set):open_access
faculties:Medizinische Fakultät
Licence (English):License LogoCreative Commons - CC BY-NC 3.0 - Attribution-NonCommercial 3.0 Unported