Patent ID: 8126541
Filing Date: 2012-02-28
Classification: A61B,G06F

Abstract:
1. An apparatus in an electroencephalogram interface system, the system having an output section for visually presenting a manipulation menu for a device, a biological signal measurement section for acquiring an electroencephalogram signal from a user, and an electroencephalogram interface section for presenting via the output section menu items of the manipulation menu with a specific switching frequency, wherein the switching frequency is the frequency at which the menu items are presented, and distinguishing a component of an event-related potential which is contained in the electroencephalogram signal after each menu item is highlighted, and operating the device based on the distinguished event-related potential, the apparatus for adjusting a distinction method for the electroencephalogram signal to be adopted in the electroencephalogram interface section comprising: a frequency analysis section for calculating a representative frequency at which a frequency power of the electroencephalogram signal becomes maximal; and a determination section for calculating a relative quantity between the switching frequency of the menu items and the representative frequency of the electroencephalogram signal, and comparing the relative quantity to a threshold value to determine whether the representative frequency is related to switching of the menu items or not, and in accordance with the result of the determination, outputting to the electroencephalogram interface section an instruction to adjust the distinction method for the electroencephalogram signal to be adopted in the electroencephalogram interface section.