Multiple studies demonstrate that diffuse EEG slowing—specifically characterized by increased delta and theta activity alongside reduced alpha power—is a well-documented electrophysiological indicator associated with Alzheimer's disease.
The provided literature consistently points to EEG spectral slowing (elevated delta/theta power and reduced alpha power or frequency) as a hallmark signature of Alzheimer's disease. All relevant sources that address EEG features in Alzheimer's patients support this association, and no papers refute it.