10/06/2025
Hearing Loss & Brain Plasticity
- Untreated mild to moderate hearing loss demonstrates cross-modal plasticity, wherein visual and somatosensory stimuli activate the auditory cortex.
- Auditory stimuli in individuals with hearing loss activate frontal and prefrontal brain areas, indicating an increased cognitive effort for listening (termed "effortful listening").
- This cognitive upregulation draws upon an individual's cognitive reserve, potentially explaining the observed association between hearing loss and cognitive decline.
- Cross-modal plasticity can develop rapidly, with changes noted as early as three months following the onset of sudden hearing loss.
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