Online LDA based brain-computer interface system to aid disabled people

Authors : Apdullah YAYIK, Yakup KUTLU

Pages : 37-49

Doi:10.28978/nesciences.328908

View : 11 | Download : 7

Publication Date : 2017-06-20

Article Type : Research Paper

Abstract :This paper aims to develop brain-computer interface system based on electroencephalography that can aid disabled people in daily life. The system relies on one of the most effective event-related potential wave, P300, which can be elicited by oddball paradigm. Developed application has a basic interaction tool that enables disabled people to convey their needs to other people selecting related objects. These objects pseudo-randomly flash in a visual interface on computer screen. The user must focus on related object to convey desired needs. The system can convey desired needs correctly by detecting P300 wave in acquired 14-channel EEG signal and classifying using linear discriminant analysis classifier just in 15 seconds. Experiments have been carried out on 19 volunteers to validate developed BCI system. As a result, accuracy rate of 90.83% is achieved in online performance.
Keywords : Brain computer interface, P3 wave, Event related potentials