Methods for diagnosing mental disorders using neurometrics

A method of diagnosing Alzheimer's Disease in a person, wherein the method comprises:

• a. measuring, using an EEG recording device, EEG signals from at least one frontal EEG channel and at least one occipital-parietal EEG channel in a person being awake with eyes closed;
• b. calculating, by a processor in operable communication with the EEG recording device, an average dominant frequency between about 5 Hz and 15 Hz of the EEG signals from the at least one frontal EEG channel and the at least one occipital-parietal EEG channel;
• c. calculating, by the processor, an average coherence at the average dominant frequency between the EEG signals from the at least one frontal EEG channel and the at least one occipital-parietal EEG channel;
• and
• d. diagnosing the person with Alzheimer's Disease if the average dominant frequency is less than about 8 Hz and the average coherence is less than about 10%.