BCI	Brain–Computer Interface
CV	Cross-Validation
CWT	Continuous Wavelet Transform
CSP	Common spatial pattern
DWT	Discrete Wavelet Transform
EEG	Electroencephalography
EM	Expectation–Maximization
ERD	Event-Related Desynchronization
ERS	Event-Related Synchronization
FFT	Fast Fourier Transform
GMM	Gaussian Mixture Model
GMM-UBM	Gaussian Mixture Model Universal Background Model
LDA	Linear Discriminant Analysis
PCA	Principal Component Analysis
STFT	Short-Time Fourier Transform
SVMs	Support Vector Machines
WT	Wavelet Transform