Journal
JOURNAL OF CLINICAL MEDICINE
Volume 10, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/jcm10153421
Keywords
cochlear implantation; working memory; processing speed; cognition; WAIS-IV
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Several studies have shown that there is a link between hearing disorders and cognitive deficits, with little known about the effects of auditory rehabilitation on elderly cognitive performance. This study specifically focused on whether cochlear implantation in elderly patients with bilateral severe hearing impairment could impact their cognitive skills positively. The results demonstrated a significant improvement in auditory parameters as well as working memory and processing speed after cochlear implant fitting, suggesting a positive influence on cognitive skills.
Several studies demonstrated the association of hearing disorders with neurocognitive deficits and dementia disorders, but little is known about the effects of auditory rehabilitation on the cognitive performance of the elderly. Therefore, the research question of the present study was whether cochlear implantation, performed in 21 patients over 70 with bilateral severe hearing impairment, could influence their cognitive skills. The measuring points were before implantation and 12 months after the first cochlear implant (CI) fitting. Evaluation of the working memory (WMI) and processing speed (PSI) was performed using the Wechsler Adult Intelligence Scale 4th edition (WAIS-IV). The audiological assessment included speech perception (SP) in quiet (Freiburg monosyllabic test; FMT), noise (Oldenburg sentence test; OLSA), and self-assessment inventory (Oldenburg Inventory; OI). Twelve months after the first CI fitting, not only the auditory parameters (SP and OI), but also the WMI and PSI, improved significantly (p < 0.05) in the cohort. The presented results imply that cochlear implantation of bilaterally hearing-impaired patients over 70 positively influences their cognitive skills.
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