2026-06-01T14:37:29Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/336982026-02-03T11:06:11Zcom_10630_2254col_10630_37953

Free Virtual Navigation Using Motor Imagery Through an Asynchronous Brain–Computer Interface Velasco-Álvarez, Francisco Javier Ron-Angevin, Ricardo Blanca-Mena, María José Realidad virtual - Navegación In this paper, an asynchronous brain-computer interface is presented that enables the control of a wheelchair in virtual environments using only one motor imagery task. The control is achieved through a graphical intentional control interface with three navigation commands (move forward, turn right, and turn left) which are displayed surrounding a circle. A bar is rotating in the center of the circle, so it points successively to the three possible commands. The user can, by motor imagery, ex- tend this bar length to select the command at which the bar is pointing. Once a command is selected, the virtual wheelchair moves in a continuous way, so the user controls the length of the advance or the amplitude of the turns. Users can volun- tarily switch from this interface to a noncontrol interface (and vice versa) when they do not want to generate any command. After performing a cue-based feed- back training, three subjects carried out an experiment in which they had to navi- gate through the same fixed path to reach an objective. The results obtained sup- port the viability of the system. 2024-09-27T11:05:08Z 2024-09-27T11:05:08Z 2010-02 journal article https://hdl.handle.net/10630/33698 https://doi.org/10.1162/pres.19.1.71 spa open access MIT Press