27 research outputs found
Comparison of Event-Related Potentials Between Conceptually Similar Chinese Words, English Words, and Pictures
Visual novel stimuli in an ERP novelty oddball paradigm: Effects of familiarity on repetition and recognition memory
Separation and localisation of P300 sources and their subcomponents using constrained blind source separation
Separation and localisation of P300 sources and their constituent subcomponents for both visual and audio stimulations is investigated in this paper. An effective constrained blind source separation (CBSS) algorithm is developed for this purpose. The algorithm is an extension of the Infomax BSS system for which a measure of distance between a carefully measured P300 and the estimated sources is used as a constraint. During separation, the proposed CBSS method attempts to extract the corresponding P300 signals. The locations of the corresponding sources are then estimated with some indeterminancy in the results. It can be seen that the locations of the sources change for a schizophrenic patient. The experimental results verify the statistical significance of the method and its potential application in the diagnosis and monitoring of schizophrenia