A method of treating and preventing a neurological disorder, such as Alzheimer's disease, in a subject in need thereof by positioning an electromagnetic field emitting source proximal to the subject and exposing the subject to an electromagnetic field having a predetermined frequency (preferably ≈300-3,000 MHz) for a predetermined absorption period (preferably greater than ≈3 days). Each individual treatment (comprising exposure to the predetermined frequency for the predetermined absorption period) is continued at a predetermined schedule for a predetermined treatment period. The EMF can have a specific absorption rate up to about 8 W/kg. The methodology enhances cognition in the subject and/or treats/prevents the underlying neurological disorder or a symptom thereof.