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Frontal EEG Asymmetry Based Classification of Emotional Valence using Common Spatial Patterns

Authors: Irene Winkler, Mark Jager, Vojkan Mihajlovic, Tsvetomira Tsoneva


In this work we evaluate the possibility of predicting the emotional state of a person based on the EEG. We investigate the problem of classifying valence from EEG signals during the presentation of affective pictures, utilizing the "frontal EEG asymmetry" phenomenon. To distinguish positive and negative emotions, we applied the Common Spatial Patterns algorithm. In contrast to our expectations, the affective pictures did not reliably elicit changes in frontal asymmetry. The classifying task thereby becomes very hard as reflected by the poor classifier performance. We suspect that the masking of the source of the brain activity related to emotions, coming mostly from deeper structures in the brain, and the insufficient emotional engagement are among main reasons why it is difficult to predict the emotional state of a person.

Keywords: Emotion, Valence, EEG, Common Spatial Patterns(CSP).

Digital Object Identifier (DOI):

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[1] R. J. Davidson, "Cerebral asymmetry and emotion: conceptual and methological conundrums," Cognition and Emotion, vol. 7, pp. 115- 138, 1993.
[2] J. A. Coan and J. J. B. Allen, "Frontal EEG asymmetry as a moderator and mediator of emotion," Biological Psychology, vol. 67, pp. 7-49, 2004.
[3] R. J. Huster, S. Stevens, A. L. Gerlach, and F. Rist, "A spectralanalytic approach to emotional responses evoked through picture presentation," International Journal of Psychophysiology, vol. 72, no. 2, pp. 212-216, 2009.
[4] P. Gable and E. Harmin-Jones, "Relative left frontal activation to appetitive stimuli: considering the role of indiviual differences," Psychophysiology, vol. 45, pp. 275 -278, 2008.
[5] M. M. Mller, A. Keil, T. Gruber, and T. Elbert, "Processing of affective pictures modulates right-hemispheric gamma band EEG activity," Clinical Neurophysiology, vol. 110, pp. 1913-1920, 1999.
[6] E. Elgavish, D. Halpern, Z. Dikman, and J. J. B. Allen, "Does frontal EEG asymmetry moderate or mediate responses to the international affective picture system (IAPS)?" Psychophysiology, vol. 40, no. Suppl. 1, p. 38, 2003.
[7] G. Chanel, J. J. M. Kierkels, M. Soleymani, and T. Pun, "Short-term emotion assessment in a recall paradigm," Int. J. Human-Computer Studies, vol. 67, pp. 607-627, 2009.
[8] B. Blankertz, R. Tomioka, S. Lemm, M. Kawanabe, and K.-R. Mller, "Optimizing spatial filters for robust EEG single-trial analysis," Signal Processing Magazine, IEEE, vol. 25, no. 1, pp. 41-56, 2008.
[9] H. Ramoser, J. Mller-Gerking, and G. Pfurtscheller, "Optimal spatial filtering of single trial EEG during imagined handmovement," IEEE Transactions on Rehabilitation Engineering, vol. 8, no. 4, pp. 441-446, 2000.
[10] M. M. Bradley and P. J. Lang, "Measuring emotion: the self-assessment manikin and the semantic differential," J Behav Therapy Exp Psychiatry, vol. 25, pp. 49-59, 1994.
[11] M. Doppelmayr, W. Klimesch, T. Pachinger, and B. Ripper, "Individual differences in brain dynamics: important implications for the calculation of event-related power," Biological Cybernetics, vol. 79, pp. 49-57, 1998.
[12] G. Loftus and M. E. J. Masson, "Using confidence intervals in withinsubject designs," Psychonomic Bulletin & Review, vol. 1, no. 4, pp. 476-490, 1994.
[13] B. Blankertz, G. Dornhege, M. Krauledat, K.-R. Mller, and G. Curio, "The non-invasive Berlin Brain-Computer Interface: Fast acquisition of effective performance in untrained subjects." NeuroImage, vol. 37, no. 2, pp. 539-550, 2007.
[14] R. J. Davidson, "What does the prefrontal cortex "do" in affect: perspectives on frontal EEG asymmetry research," Biological Psychology, vol. 67, pp. 219-233, 2004.
[15] A. D. Craig, "Forebrain emotional asymmetry: a neuroanatomical basis?" Trends in Cognitive Sciences, vol. 9, no. 12, pp. 566-571, 2005.
[16] F. C. Murphy, I. Nimmo-Smith, and A. D. Lawrence, "Functional neuroanatomy of emotions: a meta-analysis," Cognitive, affective & behavioral neuroscience, vol. 3, no. 3, pp. 207-233, 2003.
[17] C. K. Peterson, A. J. Shackman, and E. Harmon-Jones, "The role of asymmetrical frontal cortical activity in aggression," Psychophysiology, vol. 45, pp. 86-92, 2008.
[18] S. Posse, D. Fitzgerald, K. Gao, U. Habel, D. Rosenberg, G. J. Moore, and F. Schneider, "Real-time fMRI of temporolimbic regions detects amygdala activation during single-trial self-induced sadness," NeuroImage, vol. 18, pp. 760-768, 2003.
[19] A. Caria, R. Veit, R. Sitaram, M. Lotze, N. Weiskopf, W. Grodd, and N. Birbaumer, "Regulation of anterior insular cortex activity using realtime fMRI," NeuroImage, vol. 35, pp. 1238-1246, 2007.
[20] S. Johnston, S. Boehm, D. Healy, R. Goebel, and D. Linden, "Neurofeedback: A promising tool for the self-regulation of emotion networks," NeuroImage, vol. 49, pp. 1066-1072, 2010.
[21] T. Dalgleish, "The emotional brain," Nature Reviews Neuroscience, vol. 5, pp. 583-589, 2004.
[22] M. Li and B.-L. Lu, "Emotion classification based on gamma-band EEG," Conf Proc IEEE Eng Med Biol Soc, vol. 1, 2009.