Quantification and visualization of event-related changes in oscillatory brain activity in the time-frequency domain.
In this chapter we review the traditional approach for ERD/ERS quantification and a more recent approach based on wavelet transform. In particular, we address the visualization of these phenomena and the validation of the results through statistical significance testing. Furthermore, we report on preprocessing using independent component analysis (ICA) and introduce a novel ERD/ERS maximization method.
Graimann
Bernhard
B
Laboratory of Brain-Computer Interfaces (BCI-Lab), Institute for Knowledge Discovery, Graz University of Technology, Graz, Austria. graimann@tugraz.at
Pfurtscheller
Gert
G
D000465:Algorithms; D001921:Brain / Q000502:physiology*; D003344:Cortical Synchronization; D003627:Data Interpretation, Statistical; D004569:Electroencephalography / Q000706:statistics & numerical data*; D005071:Evoked Potentials / Q000502:physiology*; D006801:Humans; D025341:Principal Component Analysis