A high rate online SSVEP based brain-computer interface speller

Author

Teng Cao ; Xin Wang ; Boyu Wang ; Chi Man Wong ; Feng Wan ; Peng Un Mak ; Pui In Mak ; Mang I Vai

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Macau, Macau, China

fYear

2011

fDate

April 27 2011-May 1 2011

Firstpage

465

Lastpage

468

Abstract

This paper presents an online steady-state visual evoked potential (SSVEP) based brain-computer interface (BCI). Stimuli are displayed on a liquid crystal display (LCD) screen with a frame based encoding method to elicit SSVEPs with a wide range of frequencies. This system focuses strongly on practicability and convenience, including an adequate alphabet (42 characters) that can allow a wide range of options. Four healthy subjects attain a mean information transfer rate (ITR) of 61.64±3.61 bits/min.

Keywords

bioelectric potentials; brain-computer interfaces; electroencephalography; encoding; handicapped aids; liquid crystal displays; medical signal processing; visual evoked potentials; brain-computer interface speller; convenience; frame based encoding method; high rate online SSVEP; information transfer rate; liquid crystal display; practicability; steady-state visual evoked potential; Accuracy; Brain computer interfaces; Correlation; Electroencephalography; Monitoring; Turning; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Engineering (NER), 2011 5th International IEEE/EMBS Conference on

Conference_Location

Cancun

ISSN

1948-3546

Print_ISBN

978-1-4244-4140-2

Type

conf

DOI

10.1109/NER.2011.5910587

Filename

5910587