The effect of age-related hearing loss and listening effort on resting state connectivity

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作者
Stephanie Rosemann
Christiane M. Thiel
机构
[1] Carl-von-Ossietzky Universität Oldenburg,Biological Psychology, Department of Psychology, School of Medicine and Health Sciences
[2] Carl von Ossietzky Universität Oldenburg,Cluster of Excellence “Hearing4all”
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Scientific Reports | / 9卷
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摘要
Age-related hearing loss is associated with a decrease in hearing abilities for high frequencies. This increases not only the difficulty to understand speech but also the experienced listening effort. Task based neuroimaging studies in normal-hearing and hearing-impaired participants show an increased frontal activation during effortful speech perception in the hearing-impaired. Whether the increased effort in everyday listening in hearing-impaired even impacts functional brain connectivity at rest is unknown. Nineteen normal-hearing and nineteen hearing-impaired participants with mild to moderate hearing loss participated in the study. Hearing abilities, listening effort and resting state functional connectivity were assessed. Our results indicate no differences in functional connectivity between hearing-impaired and normal-hearing participants. Increased listening effort, however, was related to significantly decreased functional connectivity between the dorsal attention network and the precuneus and superior parietal lobule as well as between the auditory and the inferior frontal cortex. We conclude that already mild to moderate age-related hearing loss can impact resting state functional connectivity. It is however not the hearing loss itself but the individually perceived listening effort that relates to functional connectivity changes.
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