期刊
INTERNATIONAL JOURNAL OF AUDIOLOGY
卷 62, 期 6, 页码 521-532出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14992027.2022.2050823
关键词
Cochlear implant; ageing; hearing loss; cognition
This study conducted a critical assessment of the literature on the effects of cochlear implantation on adults' cognitive abilities. The results showed significant improvements in specific cognitive tests after cochlear implantation, but no significant differences in other tests. However, due to the limited number of studies, more well-designed research is needed to further explore the impact of cochlear implantation on cognitive abilities.
Objectives To conduct critical assessment of the literature on the effects of cochlear implantation on adults' cognitive abilities. Design PubMed, Scopus, Lilacs, Web of Science, Livivo, Cochrane, Embase, PsycInfo, and grey literature were searched. Eligibility criteria: age 18 or over with severe-to-profound bilateral hearing loss, cochlear implantation, cognitive test before and after implantation. Risk of bias was assessed using ROB, ROBINS-I and MASTARI tools. Meta-analysis was performed. Study sample Out of 1830 studies, 16 met the inclusion criteria. Results On AlaCog test, significant improvement was found after implantation [MD = -46.64; CI95% = -69.96 to -23.33; I-2 = 71%]. No significant differences were found on the Flanker, Recall, Trail A and n-back tests (p > 0.05). For MMSE, no significance was found [MD 0.63; CI 95% = -2.19 to 3.45; I-2 = 88%]. On TMT, an overall significant effect with a 9-second decrease in processing speed post-implantation [MD = -9.43; CI95% = -15.42 to -3.44; I-2 = 0%]. Conclusion Cognitive improvements after cochlear implantation may depend on time and the cognitive task evaluated. Well-designed studies with longer follow-up are necessary to examine whether cochlear implantation has a positive influence on cognitive abilities. Development of cognitive assessment tools to hearing-impaired individuals is needed.
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