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

fYear

2012

fDate

Aug. 28 2012-Sept. 1 2012

Firstpage

3841

Lastpage

3844

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Conference_Location

San Diego, CA

ISSN

1557-170X

Print_ISBN

978-1-4244-4119-8

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/EMBC.2012.6346805

Filename

6346805