The database was designed jointly by Dr. Dennis Duke and other researchers at Florida State University and it was recorded from the 19 scalp loci of the international 10-20 system using a Biologic Systems Brain Atlas III Plus workstation. The dataset consists of 24 healthy elderly, all being negative for any neurological or psychiatric disorder, and 160 probable AD patients diagnosed through the National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA), and Diagnostic and Statistical Manual of Mental Disorders (DSM)-III-R criteria.