Abstract
SUMMARYBrain–computer interfaces (BCI) have been studied to allow handicapped people to communicate and control their environments. However, conventional BCIs require a determination of what objects are displayed as targets in advance. BCI combined with augmented reality (AR) can display suitable choices with consideration of real space and can allow users to control devices intuitively. However, little is known about how AR systems affect the accuracy of BCIs; significant factors that may be affected include the background of AR‐BCI derived from scenery and the change of the number of target choices. In this research, üwe confirm these two effects and develop a new method using a nontarget object when there is a small number of possible targets. The results show that the background has no effect, and that changing the target decreases the accuracy. However, the proposed method improves the accuracy of AR‐BCI.
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