Title: Emotional eye movement analysis using electrooculography signal

Authors: Sananda Paul; Anwesha Banerjee; D.N. Tibarewala

Addresses: School of Bioscience & Engineering, Jadavpur University, Kolkata 700032, West Bengal, India ' School of Bioscience & Engineering, Jadavpur University, Kolkata 700032, West Bengal, India ' School of Bioscience & Engineering, Jadavpur University, Kolkata 700032, West Bengal, India

Abstract: In this study, for recognition of (positive, neutral and negative) emotions using EOG signals, subjects were stimulated with audio-visual stimulus to elicit emotions. Hjorth parameters and Discrete Wavelet Transform (DWT) (Haar mother wavelet) were employed as feature extractor. Support Vector Machine (SVM) and Naïve Bayes (NB) were used for classifying the emotions. The results of multiclass classifications in terms of classification accuracy show best performance with the combination DWT+SVM and Hjorth+NB for each of the emotions. The average SVM classifier's accuracy with DWT for horizontal and vertical eye movement are 81%, 76.33%, 78.61% and are 79.85%, 75.63% and 77.67% respectively. The experimental results show the average recognition rate of 78.43%, 74.61%, and 76.34% for horizontal and 77.11%, 74.03%, and 75.84% for vertical eye movement when Naïve Bayes group with Hjorth parameter. Above result indicates that it has the potential to be used as real-time EOG-based emotion assessment system.

Keywords: emotion recognition; EOG signals; Hjorth parameters; DWT; discrete wavelet transform; feature extraction; support vector machines; SVM; naive Bayes; HCI; human-computer interaction; emotional eye movement; electrooculograms; positive emotions; neutral emotions; negative emotions; emotion classification; emotion assessment.

DOI: 10.1504/IJBET.2017.082224

International Journal of Biomedical Engineering and Technology, 2017 Vol.23 No.1, pp.59 - 70

Received: 29 Jan 2016
Accepted: 03 Apr 2016
Published online: 13 Feb 2017 *

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