Disclosed is a system equipped with an interface that utilizes brainwaves and which reduces device behaviors that are not intended by a user. An adjustment device for a brainwave identification system is used in a brainwave interface system. The brainwave interface system comprises a biosignal measurement unit that acquires the electroencephalographic signals of a user, and a brainwave interface. The brainwave interface: presents in a regular order through an output unit each of a plurality of menu items that constitute an operation menu; identifies the event-related electric potential components that are included in electroencephalographic signals after each menu item is highlighted, by means of a predetermined identification method; and operates the device based on the identified event-related electric potential. The adjustment device for the brain wave identification system comprises: an analyzer that obtains the wave profile inclination of the event-related electric potential before the menu items are highlighted; and a determination unit that compares the electric threshold value and the wave profile inclination obtained by the analyzer, and use the comparison result to determine whether the menu item corresponding to the inclination is what the user wishes to select.
ADJUSTMENT DEVICE, METHOD, AND COMPUTER PROGRAM FOR A BRAINWAVE IDENTIFICATION SYSTEM