Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Time-Frequency Feature Extraction of Newborn EEG Seizure Using SVD-Based Techniques | EURASIP Journal on Applied Signal Processing 2004 16 2544-2554 2004 Hindawi Publishing Corporation Time-Frequency Feature Extraction of Newborn EEG Seizure Using SVD-Based Techniques Hamid Hassanpour Lab of Signal Processing Research Queensland University of Technology GPO Box 2434 Brisbane QLD 4001 Australia Email Mostefa Mesbah Lab of Signal Processing Research Queensland University of Technology GPO Box 2434 Brisbane QLD 4001 Australia Email Boualem Boashash Lab of Signal Processing Research Queensland University of Technology GPO Box 2434 Brisbane QLD 4001 Australia Email Received 27 August 2003 Revised 17 May 2004 The nonstationary and multicomponent nature of newborn EEG seizures tends to increase the complexity of the seizure detection problem. In dealing with this type of problems time-frequency-based techniques were shown to outperform classical techniques. This paper presents a new time-frequency-based EEG seizure detection technique. The technique uses an estimate of the distribution function of the singular vectors associated with the time-frequency distribution of an EEG epoch to characterise the patterns embedded in the signal. The estimated distribution functions related to seizure and nonseizure epochs were used to train a neural network to discriminate between seizure and nonseizure patterns. Keywords and phrases detection time-frequency distribution singular value decomposition probability distribution function. 1. INTRODUCTION Clinical signs of central nervous system dysfunctions in the neonate are often revealed by seizures which are the results of synchronous discharge of a large number of neurons 1 . Seizures increase the risk of impaired neurological and developmental functioning in neonatal period and also increase the risk of death 2 . Clinical manifestations of seizure in adults such as body jerking repetitive winking or fluttering of eyelids are well defined and easily .
