Altersbedingter Hörverlust im Zusammenhang mit Problemen mit der Gehirnfunktion. Bei älteren Erwachsenen mit Presbyakusis, die die Spracherkennung behindert, wurde festgestellt, dass die Verbindungen in Bereichen des Gehirns, die an der Verarbeitung von Geräuschen und Sprache sowie an Gedächtnis und Entscheidungsfindung beteiligt sind, eingeschränkt sind.
https://www.eneuro.org/content/early/2026/02/09/ENEURO.0294-25.2026
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This study reveals that age-related hearing loss (presbycusis) involves coupled structural atrophy and functional decline in key brain regions like the fusiform gyrus and putamen. We introduce the Functional-Structural Ratio (FSR) as a novel biomarker showing that reduced brain functional-structural coupling correlates with both worsening hearing thresholds and cognitive impairment. This provides the first direct neurobiological evidence linking hearing loss to cognitive decline via shared neural reorganization. FSR offers a potential tool for early screening and monitoring of dementia risk in presbycusis, highlighting that preserving hearing health may protect brain integrity. These findings advance our understanding of how sensory decline drives neurodegeneration.
This is an expected finding that adds nuance to well-founded research. We know that hearing aid use correlates with lower dementia diagnosis to an extraordinary extent, and have every reason to believe that this is because it’s important for your brain to process sensory experiences to keep sharp rather than impaired people using hearing aids less. Use it or lose it applies to more of our hardware and wiring than we like to think.