Methods, systems and computer program products for extracting paroxysmal events from signal data using multitaper blind signal source separation analysis are disclosed. According to one method, a signal data set including signal data from a plurality of channels is received. Blind signal source separation analysis is repeatedly performed on different time limited segments across the signal data in a multitaper method to extract a plurality of components indicative of paroxysmal events from the signal data. The components indicative of paroxysmal events are presented to a user.