A method and system for classifying brain signals in a BCI system. The method for classifying brain signals in a BCI system comprises the steps of: extracting CSP features for N<SUB>1</SUB> training trials; calculating classifiers based on the extracted CSP features; classifying N<SUB>2</SUB> test trials; and iteratively; re-extracting CSP features for all N<SUB>1</SUB>+N<SUB>2</SUB> trials; re-calculating classifiers based on the re-extracted CSP features; re-classifying the N<SUB>2</SUB> test trials; and determining whether a variation in the re-classification of the N<SUB>2</SUB> test trials compared to a previous iteration is equal to or lower than a threshold.
A SYSTEM AND METHOD FOR CLASSIFYING BRAIN SIGNALS IN A BCI SYSTEM