A stimulus setting window is for configuration as to when and what kinds of stimuli should be given to the subject. Num. stands for the serial number, Stimulus for the name and path of the stimulus file, and Time(s) for the timings of stimuli. The stimulus setting window next to this paragraph is an example where 16 electrodes have been configured. By use of wav, avi, bmp and txt files, a variety of stimuli would be given to the subject. In this way, depending on the purpose of data acquisition, the stimulus setting can be configured periodically or randomly by use of various files.