P300 visual speller based on random set presentation

Author

Seul-Ki Yeom ; Fazli, Siamac ; Seong-Whan Lee

Author_Institution

Dept. of Brain & Cognitive Eng., Korea Univ., Seoul, South Korea

fYear

2014

fDate

17-19 Feb. 2014

Firstpage

1

Lastpage

2

Abstract

Event-related potential (ERP)-based P300 spellers are commonly used in the domain of brain-computer interfaces as a communication pathway for the impaired. In this paper, we propose a novel stimulus representation pattern for the P300-based visual speller. In contrast to the classical matrix speller, in this new approach users see a unique combination of letters in each stimulus during a given sequence. Our results indicate that this change increases information transfer rates (ITR) for all four considered subjects.

Keywords

brain-computer interfaces; electroencephalography; medical signal processing; ERP-based P300 spellers; ITR; P300-based visual speller; brain-computer interfaces; classical matrix speller; communication pathway; event-related potential-based P300 spellers; information transfer rates; random set presentation; Accuracy; Brain-computer interfaces; Educational institutions; Electrodes; Electroencephalography; Feature extraction; Visualization; Brain-computer interface (BCI); Electroencephalography (EEG); Event-related potential (ERP); P300;

fLanguage

English

Publisher

ieee

Conference_Titel

Brain-Computer Interface (BCI), 2014 International Winter Workshop on

Conference_Location

Jeongsun-kun

Type

conf

DOI

10.1109/iww-BCI.2014.6782567

Filename

6782567