Wheelchair Control Based on Steady-State Somatosensory Evoked Potentials

For the last decade, a brain-computer interface (BCI) has gained great interests in the fields and successfully applied to various applications. In this work, we focus on a steady-state somatosensory evoked potential (SSSEP) based brain-controlled wheelchair that allows people with mobility impairment to improve activities of daily living. In our system, a user concentrated on three vibration stimuli (attached on left hand, right-hand, and foot) selectively for control wheelchair. The three stimuli were associated with three commands of wheelchair: turn-left, turn-right, and move-forward. Four healthy subjects participated in wheelchair control experiments to validate performance. As a results, all subjects controlled wheelchair successfully from the start to goal line without any collision.