Gamma-band approximate entropy

1. Alzheimer's disease is associated with gamma-band approximate entropy in humans.

   “gamma ApEn was markedly reduced in those with AD compared to both HE and MCI groups, with central and frontal localization”

   Humanscompared with healthy elderly and mild cognitive impairment groupscentral, frontal, and occipital brain regions

   Electroencephalographic complexity and cognitive decline: Insights from approximate entropy across aging and dementia

   Alzheimer's & dementia (New York, N. Y.)·11 Oct 2026

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