Augmenting Gaze Control with a Brain-Computer Interface
نویسندگان
چکیده
We present a hybrid brain-computer interface (HBCI) composed of a motor imagery-based brain switch and a headtracking device. Normal gaze-only (either head or eye gaze) interfaces suffer from a Midas Touch problem where unwanted selection of commands is triggered by subjects gazing at objects for too long. We use a BCI to provide a nontouch communication channel. Subjects were able to select and move objects in a fully immersive virtual environment. Object pick up and drop off was carried out by looking at the target object whilst using the BCI-based brain switch; object movement was controlled by the head-tracker. The HBCI was compared with a control condition where gaze dwell time (DT) was used to pick up and drop off objects. Overall, the HBCI was just as fast and accurate as the DT condition, which highlights the potential for a HBCI to be used as an interaction device in a variety of user interface situations.
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