Classification of EEG in a steady state visual evoked potential based brain computer interface experiment

Zafer Işcan*, Özen Özkaya, Zümray Dokur

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

In this paper, electroencephalogram (EEG) signals of 20 subjects are classified in a steady state visual evoked potential (SSVEP) based brain computer interface (BCI) system by using 4 different stimulation frequencies in a program created by Visual C#. After applying proper pre-processing methods, power spectral density (PSD) based features are extracted around first and second harmonics of the stimulation frequencies. Average classification performance obtained from 20 subjects in 4-class classification is 83.62% with Nearest Mean Classifier (NMC). Results for 5-class classification, EEG segment size and gender differences are also analyzed in a detailed manner. The classification method is simple and very suitable for real-time experiments.

Original languageEnglish
Title of host publicationAdaptive and Natural Computing Algorithms - 10th International Conference, ICANNGA 2011, Proceedings
Pages81-88
Number of pages8
EditionPART 2
DOIs
Publication statusPublished - 2011
Event10th International Conference on Adaptive and Natural Computing Algorithms, ICANNGA 2011 - Ljubljana, Slovenia
Duration: 14 Apr 201116 Apr 2011

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 2
Volume6594 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference10th International Conference on Adaptive and Natural Computing Algorithms, ICANNGA 2011
Country/TerritorySlovenia
CityLjubljana
Period14/04/1116/04/11

Keywords

  • BCI
  • Classification
  • EEG
  • SSVEP

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