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Institute of Electrical and Electronics Engineers, IEEE Transactions on Signal Processing, 5(60), p. 2604-2616, 2012

DOI: 10.1109/tsp.2012.2187647

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Adaptive Emotional Information Retrieval From EEG Signals in the Time-Frequency Domain

Journal article published in 2012 by Panagiotis C. Petrantonakis, Leontios J. Hadjileontiadis ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

This paper aims at developing adaptive methods for electroencephalogram (EEG) signal segmentation in the time-frequency domain, in order to effectively retrieve the emotion-related information within the EEG recordings. Using the multidimensional directed information analysis supported by the frontal brain asymmetry in the case of emotional reaction, a criterion, namely asymmetry index , is used to realize the proposed segmentation processes that take into account both the time and frequency (in the empirical mode decomposition domain) emotionally related EEG components. The efficiency of the -based “emotional” filters was justified through an extensive classification process, using higher-order crossings and cross-correlation as feature-vector extraction techniques and a support vector machine classifier for six different classification scenarios in the valence/arousal space. This resulted in mean classification rates from 64.17% up to 82.91% in a user-independent base, revealing the potential of establishing such a filtering for reliable EEG-based emotion recognition systems.