Evaluation of the effect of hearing loss on cognitive-vestibular functions in the geriatric population

Presbycusis is known to accelerate mental decline processes and to cause secondary consequences such as social isolation and depression when not intervened. The association of presbycusis and presbyvestibulopathy disorders is likely. These changes in vestibular functions are closely related to cognitive functions. This study investigated the effect of hearing loss on cognitive and vestibular functions in a geriatric population. This study was conducted with 200 participants over the age of 65. The study was conducted with three groups: individuals with normal hearing, moderate sensorineural hearing loss, and severe sensorineural hearing loss. The relationship between the participants’ responses to the Cognitive Vestibular Function Scale and their hearing levels was examined. Of the individuals with hearing loss in the study group, 55 had moderate SNHL, and 45 had severe SNHL. The age range of the participants was 65 to 91 years (71.06 ± 4.92). When the control (Group N) and study groups (Group M and Group S) were compared according to CVFS and subscale scores, they were found to be statistically different (p < 0.05). In pairwise comparisons, a significant difference (p < 0.05) was found in all pairwise combinations except Group N and Group M (p = 0.109) for the VSM subscale. It was concluded that having a healthy hearing is the most influential factor for maintaining cognitive vestibular functions in the geriatric population. It was found that the degree of hearing loss primarily affects cognitive vestibular functions and that cognitive vestibular functions deteriorate more as hearing loss increases.