Cortical gray to white matter signal intensity ratio

1. Environmental noise exposure increases cortical gray to white matter signal intensity ratio in humans (20.11 ± 0.93 vs 19.68 ± 0.96, p = 0.036).

   “The whole‐brain GWR was significantly higher in the high noise exposure group (20.11 ± 0.93) compared to that in the low noise exposure group (19.68 ± 0.96, p = 0.036).”

   Humansn = 106

   Environmental noise exposure and a new biomarker of neurodegeneration in Alzheimer's disease

   AAIC 2025 abstract·23 Dec 2025

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1. Environmental noise exposure is associated with cortical gray to white matter signal intensity ratio in humans (r = 0.203, p = 0.037).

   “Whole‐brain GWR values were significantly correlated with night noise levels ( r = 0.203, p = 0.037).”

   Humansn = 106

   Environmental noise exposure and a new biomarker of neurodegeneration in Alzheimer's disease

   AAIC 2025 abstract·23 Dec 2025

More on Environmental noise exposure