Audio-cued motor imagery-based brain-computer interface: Navigation through virtual and real environments

作者：Velasco Alvarez Francisco^*; Ron Angevin Ricardo; da Silva Sauer Leandro; Sancha Ros Salvador

来源：Neurocomputing, 2013, 121: 89-98.

DOI：10.1016/j.neucom.2012.11.038

• Brain-computer interface (BCI)
• Navigation
• Asynchronous
• Motor imagery (MI)
• Mental tasks
• Auditory

The aim of this work is to provide a navigation paradigm that could be used to control a wheelchair through a brain-computer interface (BCI). In such a case, it is desirable to control the system without a graphical interface so that it will be useful for people without gaze control. Thus, an audio-cued paradigm with several navigation commands is proposed. In order to reduce the probability of misclassification, the BCI operates with only two mental tasks: relaxed state versus imagination of right hand movements; the use of motor imagery for navigation control is not yet extended among the auditory BCIs. Two experiments are described: in the first one, users practice the switch from a graphical to an audio-cued interface with a virtual wheelchair; in the second one, they change from virtual to real environments. The obtained results support the use of the proposed interface to control a real wheelchair without the need of a screen to provide visual stimuli or feedback.

• 出版日期2013-12-9