Classifying healthy children and children with attention deficit through features derived from sparse and nonnegative tensor factorization using event-related potential

Authors:
Fengyu Cong;Anh Huy Phan;Heikki Lyytinen;Tapani Ristaniemi;Andrzej Cichocki
Affiliations:
Department of Mathematical Information Technology, University of Jyväskylä, Jyväskylä, Finland;Lab for Advanced Brain Signal Processing, Brain Science Institute - RIKEN, Japan;Department of Psychology, University of Jyväskylä, Finland;Department of Mathematical Information Technology, University of Jyväskylä, Jyväskylä, Finland;Lab for Advanced Brain Signal Processing, Brain Science Institute - RIKEN, Japan
Venue:
LVA/ICA'10 Proceedings of the 9th international conference on Latent variable analysis and signal separation
Year:
2010

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Abstract

In this study, we use features extracted by Nonnegative Tensor Factorization (NTF) from event-related potentials (ERPs) to discriminate healthy children and children with attention deficit (AD). The peak amplitude of an ERP has been extensively used to discriminate different groups of subjects for the clinical research. However, such discriminations sometimes fail because the peak amplitude may vary severely with the increased number of subjects and wider range of ages and it can be easily affected by many factors. This study formulates a framework, using NTF to extract features of the evoked brain activities from time-frequency represented ERPs. Through using the estimated features of a negative ERP-mismatch negativity, the correct rate on the recognition between health children and children with AD approaches to about 76%. However, the peak amplitude did not discriminate them. Hence, it is promising to apply NTF for diagnosing clinical children instead of measuring the peak amplitude.