Toward brain-computer interface based wheelchair control utilizing tactually-evoked event-related potentials
Where an individual lacks even basic motor functions, an alternative method must allow them to manoeuvre their wheelchair. Brain-computer interface, where specific brain activities translate to movement, must include stimuli for the user to focus on to dictate these movements.
In this case, continuous vibrations are created on four points of the body. Individual calibrations are made before participants guide chairs through a virtual building. User experience of reliability and control was generally positive. However, experience of attention demand and system speed varied across users.
Most intelligent wheelchairs include shared control sensors as a safety feature to avoid accidents, collision sensors were included in the virtual chair. It was rare that corrective movements or shared controls were necessary.
Longer test routes would place further strain on the attention span, indicating potential for daily use and should include a range of participants from across patient group. > From: Kaufmann et al., J Neuroeng Rehabil 11 (2014) 7. All rights reserved to The Author(s).
Visit the PubMed summary for more information or click here for the free full text version! On top of that, you can dive deeper into intelligent wheelchairs with the video below or into brain-computer interfacing on this website.