4-channel EEG Biofeedback Device + EEG Recording & Analysis Device Equipment[desktop/portable]: 4-channel EEG DigiTrack BF amplifier High-End PC with two LCD min. 21" monitors or laptop with one LCD min. 21" monitor Laser printer for printing results of examination [for the desktop device only] Specialized software for EEG Biofeedback trainings for analyzing and controlling the bioelectric activity of the brain during the training Set of 57 stimulating boards collected in 19 types Funcion of training results comparison - "learning curve" Patient Database software enabling patient registration, creating description of trainings, export of examination data, data archiving and creating statistics Trolley with the surge protector [for the desktop device only] Set of ear electrodes and cup electrodes Conductive adhesive paste User manual