감정을 유발하는 청각자극에 따라 발생되는 EEG(Electroencephalographic) 스펙트럼 강도와 감정 반응 간의 상관관계는 중요한 변수이다. 약 20여 년 전 쾌감을 주는 청각자극에 대하여 측정된 신호의 강도가 전전두엽에서 비대칭적으로 반응을 보였다는 연구 결과가 발표되었다. 본 연구에서는 자극관련 스펙트럼적 반응(Event-related Spectral Perturbation: ERSP)이 전두엽에서 비대칭적으로 발생되는지 고찰하기 위하여 청각자극 실험을 수행하였다. 30명의 건강한 대학생 지원자들이 IADS(International Affective Digital Sounds) 실험에 참여하였다. 이 청각자극은 행복, 공포, 그리고 중립의 3단계로 분류되었으며, 데이터의 분석은 세타파(4-8Hz)와 알파파(8-13Hz)에서 이루어졌다. 알파대역의 ERSP 지도는 오른쪽 전두엽에서 행복감과 공포감의 자극에서 높은 신호의 강도를 보여주는 반면 중립성 자극에서는 왼쪽 전두엽에서 높은 신호가 발생되었다. 그러나 세타파는 행복감과 공포감의 자극에 따라 좌측 전두엽에서 높은 신호가 나타나는 반면, 중립적 자극에 따라 우측 전두엽에서 높은 신호를 보여주었다. 높은 쾌감성 자극(행복)은 상대적으로 우측 전두엽에서 높은 EEG 신호가 측정되었으며, 낮은 쾌감성 자극(중립과 공포)은 왼쪽 전두엽에서 측정되었다. 또한 가장 큰 세타파의 변화가 전두엽의 중앙에서 발생되었다. 알파파에서 행복한 청각자극에 가장 강한 신호가 전두엽 전체에서 관찰되었다. 이 결과들은 기존의 감정들과 일치되며, 세타파와 알파파가 감정처리에서 중요한 역할을 하고 있음을 시사한다.
감정을 유발하는 청각자극에 따라 발생되는 EEG(Electroencephalographic) 스펙트럼 강도와 감정 반응 간의 상관관계는 중요한 변수이다. 약 20여 년 전 쾌감을 주는 청각자극에 대하여 측정된 신호의 강도가 전전두엽에서 비대칭적으로 반응을 보였다는 연구 결과가 발표되었다. 본 연구에서는 자극관련 스펙트럼적 반응(Event-related Spectral Perturbation: ERSP)이 전두엽에서 비대칭적으로 발생되는지 고찰하기 위하여 청각자극 실험을 수행하였다. 30명의 건강한 대학생 지원자들이 IADS(International Affective Digital Sounds) 실험에 참여하였다. 이 청각자극은 행복, 공포, 그리고 중립의 3단계로 분류되었으며, 데이터의 분석은 세타파(4-8Hz)와 알파파(8-13Hz)에서 이루어졌다. 알파대역의 ERSP 지도는 오른쪽 전두엽에서 행복감과 공포감의 자극에서 높은 신호의 강도를 보여주는 반면 중립성 자극에서는 왼쪽 전두엽에서 높은 신호가 발생되었다. 그러나 세타파는 행복감과 공포감의 자극에 따라 좌측 전두엽에서 높은 신호가 나타나는 반면, 중립적 자극에 따라 우측 전두엽에서 높은 신호를 보여주었다. 높은 쾌감성 자극(행복)은 상대적으로 우측 전두엽에서 높은 EEG 신호가 측정되었으며, 낮은 쾌감성 자극(중립과 공포)은 왼쪽 전두엽에서 측정되었다. 또한 가장 큰 세타파의 변화가 전두엽의 중앙에서 발생되었다. 알파파에서 행복한 청각자극에 가장 강한 신호가 전두엽 전체에서 관찰되었다. 이 결과들은 기존의 감정들과 일치되며, 세타파와 알파파가 감정처리에서 중요한 역할을 하고 있음을 시사한다.
The correlations between electroencephalographic (EEG) spectral power and emotional responses during affective sound clip listening are important parameters. Hemispheric asymmetry in prefrontal activation have been proposed in two decades ago, as measured by power value, is related to reactivity to ...
The correlations between electroencephalographic (EEG) spectral power and emotional responses during affective sound clip listening are important parameters. Hemispheric asymmetry in prefrontal activation have been proposed in two decades ago, as measured by power value, is related to reactivity to affectively pleasure audio stimuli. In this study, we designed an emotional audio stimulus experiment in order to verify frontal EEG asymmetry by analyzing Event-related Spectral Perturbation (ERSP) results. Thirty healthy college male students volunteered the stimulus experiment with the standard IADS(International Affective Digital Sounds) clips. These affective sound clips are classified in three emotion states, high pleasure-high arousal (happy), middle pleasure-low arousal (neutral) and low pleasure-high arousal (fear). The analysis of the data was performed in both theta (4-8Hz) and alpha (8-13Hz) bands. ERSP maps in the alpha band revealed that there are the stronger power responses of high pleasure (happy) in the right frontal lobe, while the stronger power responses of middle-low pleasure (neutral and fear) in the left frontal lobe. Moreover, ERSP maps in the theta band revealed that there are the stronger power responses of high arousal (fear and happy) in the left pre-frontal lobe, while the stronger responses of low arousal (neutral) in the right pre-frontal lobe. However, the high pleasure emotions (happy) can elicit greater relative right EEG activity, while the low and middle pleasure emotions (fear and neutral) can elicit the greater relative left EEG activity. Additionally, the most differences of theta band have been found out in the medial frontal lobe, which is proved as the frontal midline theta. And there are the strongest responses of happy sounds in the alpha band around the whole frontal regions. These results are well suited for emotion recognition, and provide the evidences that theta and alpha powers may have the more important role in the emotion processing than previously believed.
The correlations between electroencephalographic (EEG) spectral power and emotional responses during affective sound clip listening are important parameters. Hemispheric asymmetry in prefrontal activation have been proposed in two decades ago, as measured by power value, is related to reactivity to affectively pleasure audio stimuli. In this study, we designed an emotional audio stimulus experiment in order to verify frontal EEG asymmetry by analyzing Event-related Spectral Perturbation (ERSP) results. Thirty healthy college male students volunteered the stimulus experiment with the standard IADS(International Affective Digital Sounds) clips. These affective sound clips are classified in three emotion states, high pleasure-high arousal (happy), middle pleasure-low arousal (neutral) and low pleasure-high arousal (fear). The analysis of the data was performed in both theta (4-8Hz) and alpha (8-13Hz) bands. ERSP maps in the alpha band revealed that there are the stronger power responses of high pleasure (happy) in the right frontal lobe, while the stronger power responses of middle-low pleasure (neutral and fear) in the left frontal lobe. Moreover, ERSP maps in the theta band revealed that there are the stronger power responses of high arousal (fear and happy) in the left pre-frontal lobe, while the stronger responses of low arousal (neutral) in the right pre-frontal lobe. However, the high pleasure emotions (happy) can elicit greater relative right EEG activity, while the low and middle pleasure emotions (fear and neutral) can elicit the greater relative left EEG activity. Additionally, the most differences of theta band have been found out in the medial frontal lobe, which is proved as the frontal midline theta. And there are the strongest responses of happy sounds in the alpha band around the whole frontal regions. These results are well suited for emotion recognition, and provide the evidences that theta and alpha powers may have the more important role in the emotion processing than previously believed.
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문제 정의
Event Related Spectral Perturbation (ERSP) was investigated firstly by S Makeig [13] in 1993. His study focused on the broad event-related auditory research. Some EEG studies on musically induced emotions provided evidence in favor of the frontal asymmetry.
In this paper we investigated how the brain activity changes in the frontal theta and alpha bands according to three classical audio emotional stimuli. IADS sound of 42 segments were selected as our stimuli.
These ERSP features exhibit certain patterns in the time-frequency domain and contain relevant and complementary information, and might have the potential to provide new or extra features to increase the performance. In this paper, we aim to find out the EEG response features of frontal theta and alpha bands during the emotional audio stimulation using ERSP maps.
제안 방법
During the experiment, the selected sounds were classified two equal runs, each of which have 21 sound clips from three states. Specially, Run1 have more excessive affective sounds.
대상 데이터
Silver-silver-chloride-electrodes (Ag/Gal) were used in association with the ‘‘Easy Cap System’’. In this research, eighteen electrodes (Fp1, Fp2, F3, F4, Fz, F7, F8, C3, C4, Cz, T7, T8, P3, P4, P7, P8, O1, and O2) were inserted to record EEG signals using the Easy Cap which refers to Fig. 3. The circles shows the selected channel in this study.
The International Affective Digitized Sound system (IADS) provides a set of acoustic emotional stimuli for experimental investigations of emotion and attention. There are 42 sound clips from IADS in this experiment, which were shown in the Fig. 1. They were characterized by both levels of arousal and valence namely: high valence-high arousal, low valence-high arousal and middle valence-low arousal.
Thirty males in the age group of 20-26 years were employed as subjects. They are all right-handed and have correct visions.
성능/효과
In conclusion, the results of the present study provide evidences that theta and alpha powers activation may play the important roles in the emotion processing. Moreover, they indicate that during the affective sound clips listening the whole frontal regions in the theta and alpha bands are activated for the different emotional states and that different level of valence and arousal might be captured by different electrodes.
참고문헌 (17)
Blood, Anne J., Robert J. Zatorre, Patrick Bermudez, and Alan C. Evans, "Emotional responses to pleasant and unpleasant music correlate with activity in paralimbic brain regions", Nature neuroscience, Vol.2, No.4, pp.382-387, 1999.
Flores-Gutierrez, Enrique O., Jose-Luis Diaz, Fernando A. Barrios, Rafael Favila-Humara, Miguel Angel Guevara, Yolanda del Rio-Portilla, and Maria Corsi-Cabrera, "Metabolic and electric brain patterns during pleasant and unpleasant emotions induced by music masterpieces", International Journal of Psychophysiology, Vol.65, No.1, pp.69-84, 2007.
Granot, Roni Y., Zohar Eitan, "Musical tension and the interaction of dynamic auditory parameters", pp.219-246, 2011.
Juslin, Patrik N., and Daniel Vastfjall, "Emotional responses to music: The need to consider underlying mechanisms", Behavioral and brain sciences, Vol.31, No.5, pp.559-575, 2008.
Harmon-Jones, E., Gable, P. A., and Peterson, C. K., "The role of asymmetric cortical activity in emotion-related phenomena: A review and update", Biological Psychology, Vol.84, pp.451-462, 2010.
Rutherford, H. J. V., and Lindell, A. K., "Thriving and surviving: Approach and avoidance motivation and lateralization", Emotion Review, Vol.3, pp.333-343, 2011.
Berkman, E. T., Lieberman, M. D., "Appoaching the bad and avoiding the good: Lateral prefrontal cortical asymmetry distinguishes between action and valence", Journal of Cognitive Neuroscience, Vol.22, pp.1970-1979, 2010.
Carver, Charles S., and Eddie Harmon-Jones, "Anger is an approach-related affect: Evidence and implications", Psychological Bulletin, Vol.135, pp.183-204, 2009.
Hasselmo, Michael E., and Howard Eichenbaum, "Hippocampal mechanisms for the context-dependent retrieval of episodes", Neural networks, Vol.18, No.9, pp.1172-1190, 2005.
Larsen, R. J., Buss, D. M., "NewYork: McGraw-Hill", Personality psychology, 2002.
Makeig, Scott, "Auditory event-related dynamics of the EEG spectrum and effects of exposure to tones", Electroencephalography and clinical neurophysiology, Vol.86, No.4, pp.283-293, 1993.
Sammler, Daniela, Maren Grigutsch, Thomas Fritz, and Stefan Koelsch, "Music and emotion: electrophysiological correlates of the processing of pleasant and unpleasant music", Psychophysiology, Vol.44, No.2, pp.293-304, 2007.
Flores-Gutierrez, Enrique O., Jose-Luis Diaz, Fernando A. Barrios, Miguel Angel Guevara, Yolanda del Rio-Portilla, Maria Corsi-Cabrera, and Enrique O. del Flores-Gutierrez, "Differential alpha coherence hemispheric patterns in men and women during pleasant and unpleasant musical emotions", International Journal of Psychophysiology, Vol.71, No.1, pp.43-49, 2009.
Delorme, Arnaud, and Scott Makeig, "EEGLAB: an open source toolbox for analysis of single-trial EEG dynamics including independent component analysis", Journal of neuroscience methods, Vol.134, No.1, pp.9-21, Mar., 2004.
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