The EEG spectra of Alzheimer's disease.

Sixteen Alzheimer's and 16 non-Alzheimer's dementia patients, the two groups being matched for dementia, as well as 10 normal controls were given an EEG examination with 12 monopolar leads during an awake-resting condition. Power spectra (16 s) were obtained in 12 brain areas for 18 frequency bands (0-36 Hz). An 11-point dementia scale furnished the dementia scores.