Comparison Between Different Methods of Feature Extraction in BCI Systems Based on SSVEP

Document Type: Research Paper

Authors

1 Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

2 Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran.

3 Department of Electrical-Electronics Engineering, Urmia Branch‎, ‎Islamic Azad University‎, ‎Urmia‎, ‎Iran.

Abstract

‎There are different feature extraction methods in brain-computer interfaces (BCI) based on Steady-State Visually Evoked Potentials (SSVEP) systems‎. ‎This paper presents a comparison of five methods for stimulation frequency detection in SSVEP-based BCI systems‎. ‎The techniques are based on Power Spectrum Density Analysis (PSDA)‎, ‎Fast Fourier Transform (FFT)‎, ‎Hilbert‎- ‎Huang Transform (HHT)‎, ‎Cross Correlation and Canonical Correlation Analysis (CCA)‎. ‎The results demonstrate that the CCA and FFT can be successfully applied for stimulus frequency detection by considering the highest accuracy and minimum consuming ‎time.‎

Keywords