It is an object to provide a means for easily operating various devices to be controlled (i.e. a word processor or a car) using a brain wave signal of a patient with Alzheimers disease or a psychological disorder, and for supporting the active performance of a user by employing wireless communication with a memory (wireless memory) capable of communicating without wires in which a command on the human movement is memorized. A present biological signal processing unit has an electrode for detecting a biological signal (an electric signal) from a living body, or for transmitting an electric signal into a living body, an interface, and an antenna which can communicate with an external device (i.e. wireless memory, reader/writer) therefore, convenience of the user is improved in the case where a user utilizes an electronic device or the like. In addition, the active performance of a user can be supported.