A Multi-Channel Fusion Based Newborn Seizure Detection

Malarvili BalaKrishnan, Paul Colditz, Boualeum Boashash

College of Engineering-Qatar University, Doha, Qatar.
Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia.
Royal Brisbane & Women’s Hospital Campus, Centre for Clinical Research, University of Queensland, Brisbane, Australia.

DOI: 10.4236/jbise.2014.78055                

Abstract

We propose and compare two multi-channel fusion schemes to utilize the information extracted from simultaneously recorded multiple newborn electroencephalogram (EEG) channels for seizure detection. The first approach is known as the multi-channel feature fusion. It involves concatenating EEG feature vectors independently obtained from the different EEG channels to form a single feature vector. The second approach, called the multi-channel decision/classifier fusion, is achieved by combining the independent decisions of the different EEG channels to form an overall decision as to the existence of a newborn EEG seizure. The first approach suffers from the large dimensionality problem. In order to overcome this problem, three different dimensionality reduction techniques based on the sum, Fisher’s linear discriminant and symmetrical uncertainty (SU) were considered. It was found that feature fusion based on SU technique outperformed the other two techniques. It was also shown that feature fusion, which was developed on the basis that there was inter-dependence between recorded EEG channels, was superior to the independent decision fusion.

Keywords

EEG, Newborn Seizure Detection, Multi-Channel, Feature Fusion, Decision/Classifier Fusion

Conflicts of Interest

The authors declare no conflicts of interest.

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