The book has 12 chapters which are on: EEG extraction; EEG in auditory selective attention; EEG signal detection, feature optimisation, and extraction method for sleep apnea; person authentication using electroencephalogram (EEG) brain waves signals; handedness detection system; Parkinson's disease feature extraction; source analysis in motor imagery EEG BCI applications; smart air travel support system; brain signal classification using normalisation; biometric brain dermatoglyphic neural architecture; electrocardiography; and OSAS blind source separation.