Feature extraction from EEGs associated with emotions

The state of mind of a person is supported by the brain activity, and hence features of the state of mind appear in the scalp potentials, as seen on an electroencephalogram (EEG). The EEG features have been extracted into a set of 135 state variables of cross-correlation coefficients of EEGs collected with ten scalp electrodes in the θ, α, and β frequency bands corresponding toanger, sadness, joy, andrelaxation. An emotion matrix is defined which transforms the set of 135 state variables into a four-element emotion vector of which the components are indexes corresponding to the four elementary emotional states. The maximum time resolution of the emotion analysis is 0.64s and it is done in real time. This new technique has a wide variety of applications in both medical and non-medical areas, and the technology suggests the possibility of direct control of systems by the human emotional state.

[1]  M. George Seminars in Basic Neurosciences , 1995 .

[2]  J. Kagan,et al.  On the nature of emotion. , 1994, Monographs of the Society for Research in Child Development.

[3]  E. Silberman,et al.  Hemispheric lateralization of functions related to emotion , 1986, Brain and Cognition.

[4]  J. Turner Human Emotions: A Sociological Theory , 2007 .

[5]  S. Tomkins Illuminating and Stimulating. (Book Reviews: Affect, Imagery, Consciousness. vol. 1, The Positive Affects) , 1963 .

[6]  B. Horwitz,et al.  Brain activity during transient sadness and happiness in healthy women. , 1995, The American journal of psychiatry.

[7]  G. Dawson,et al.  Frontal electroencephalographic correlates of individual differences in emotion expression in infants: a brain systems perspective on emotion. , 1994, Monographs of the Society for Research in Child Development.

[8]  P. Ekman Unmasking The Face , 1975 .

[9]  H. Schlosberg Three dimensions of emotion. , 1954, Psychological review.

[10]  Ruben C. Gur,et al.  Differential effects of mood on cortical cerebral blood flow: A 133xenon clearance study , 1994, Psychiatry Research.

[11]  Enrica Bonanni,et al.  Emotivity, personality, and task-dependent EEG asymmetry , 1992, Physiology & Behavior.

[12]  H Hinrichs,et al.  Basic emotions reflected in EEG-coherences. , 1992, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.