EEG Biofeedback training enables improvement of cognitive functions of the brain. It helps to achieve control over physiological processes taking place in our organisms. Biofeedback is used as a therapeutic method for children with scholastic problems, ADHD, people after brain injury and as therapy of some mental disorders. It could be used to improve concentration of healthy people or as relaxation training. Device equipment [desktop/portable]: 2-channel EEG DigiTrack BF amplifier High-End PC with two LCD min. 21" monitors or laptop with one min. LCD 21" monitor Laser printer for printing results of examination [for the stationary 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 collecetd 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