Effect of the combination of different numbers of flickering frequencies in an SSVEP-BCI for healthy volunteers and stroke patients

Author

Carvalho, Sarah N. ; Costa, Thiago B. S. ; Uribe, Luisa F. S. ; Soriano, Diogo C. ; Almeida, Sara R. M. ; Min, Li L. ; Castellano, Gabriela ; Attux, Romis

Author_Institution

Fed. Univ. of Ouro Preto, Ouro Preto, Brazil

fYear

2015

fDate

22-24 April 2015

Firstpage

78

Lastpage

81

Abstract

The steady-state visually evoked potential (SSVEP) is a particular response of the brain observed as an oscillating wave induced by repetitive visual stimulation. This paper focuses on the use of this paradigm for the construction of a brain-computer interface (BCI) system using different numbers of visual stimuli in different frequencies. The responses were analyzed for healthy subjects and stroke patients and show that a suitable choice of stimulation frequencies can be of paramount importance insofar as the system performance is concerned.

Keywords

bioelectric potentials; brain; brain-computer interfaces; SSVEP-BCI; brain-computer interface system; oscillating wave; steady-state visually evoked potential; visual stimulation; Accuracy; Brain-computer interfaces; Electrodes; Electroencephalography; Feature extraction; Steady-state; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Neural Engineering (NER), 2015 7th International IEEE/EMBS Conference on

Conference_Location

Montpellier

Type

conf

DOI

10.1109/NER.2015.7146564

Filename

7146564