Title :
A P300-based EEG-BCI for spatial navigation control
Author :
Curtin, A. ; Ayaz, Hasan ; Yichuan Liu ; Shewokis, P.A. ; Onaral, B.
Author_Institution :
Sch. of Biomed. Eng. Sci. & Health Syst., Drexel Univ., Philadelphia, PA, USA
fDate :
Aug. 28 2012-Sept. 1 2012
Abstract :
In this study, a Brain Computer Interface (BCI) based on the P300 oddball paradigm has been developed for spatial navigation control in virtual environments. Functionality and efficacy of the system were analyzed with results from nine healthy volunteers. Each participant was asked to gaze at an individual target in a 3×3 P300 matrix containing different symbolic navigational icons while EEG signals were collected. Resulting ERPs were processed online and classification commands were executed to control spatial movements within the MazeSuite virtual environment and presented to the user online during an experiment. Subjects demonstrated on average, ~89% online accuracy for simple mazes and ~82% online accuracy in longer more complex mazes. Results suggest that this BCI setup enables guided free-form navigation in virtual 3D environments.
Keywords :
brain-computer interfaces; electroencephalography; medical control systems; medical signal processing; signal classification; virtual reality; EEG signals; P300 oddball paradigm; P300-based EEG-BCI; brain computer interface; classification commands; guided free-form navigation; maze suite virtual environment; spatial movements; spatial navigation control; symbolic navigational icons; user online; virtual 3D environments; Accuracy; Bit rate; Brain computer interfaces; Electroencephalography; Navigation; Protocols; Virtual environments; Brain; Electroencephalography; Event-Related Potentials, P300; Female; Humans; Male; Orientation; Photic Stimulation; Reproducibility of Results; User-Computer Interface; Young Adult;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
DOI :
10.1109/EMBC.2012.6346805
