지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
It is known that gamma-band activity (GBA) and phase synchrony (GBPS) are induced by emotional visual stimuli. However, the characteristics of GBA and GBPS according to different emotional states have not been identified. The purpose of this study is to investigate the changes in gamma-band neuronal synchronization induced by positive and negative emotional visual stimuli using electroencephalograms (EEGs). Thirteen healthy male subjects have participated in the experiment. The induced spectral power in gamma-band was the highest for negative stimuli, and the lowest for neutral stimuli in 300-2,000 ms after the stimulus onset. The inter-regional phase synchronization in gamma-band was increased in 500-2,000 ms, mainly between the bilateral frontal regions and the parieto-occipital regions. Larger number of significant connections were found by negative stimuli compared to positive ones. Judging from temporal and spatial characteristics of the gamma-band activity and phase synchrony increases, the results may imply that affective visual stimuli cause stronger memory encoding than non-emotional stimuli, and this effect is more significant for negative emotional stimuli than positive ones.
목차
등록된 정보가 없습니다.
참고문헌 (43)
참고문헌 신청
D. H. Blackwood / 1990 / Cognitive brain potentials and their application / Br. J. Psychiatry. Suppl. (9):96~101
J. K. Olofsson / 2008 / Affective picture processing: An integrative review of ERP findings / Biol. Psychol. 77(3):247~265
M. M. Muller / 1999 / Processing of affective pictures modulates right-hemisphere gamma band activity / Clin. Neurophysiol. 110:1913~1920
A. Keil / 2001 / Effects of emotional arousal in the cerebral hemispheres: A study of oscillatory brain activity and event-related potentials / Clin. Neurophysiol. 112(11):2057~2068
H. Oya / 2002 / Electrophysiological responses in the human amygdala discriminate emotion categories of complex visual stimuli / J. Neurosci. 22(21):9502~9512
J. K. Olofsson / 2008 / Affective picture processing: An integrative review of ERP findings / Biol. Psychol. 77(3):247~265
M. M. Muller / 1999 / Processing of affective pictures modulates right-hemisphere gamma band activity / Clin. Neurophysiol. 110:1913~1920
A. Keil / 2001 / Effects of emotional arousal in the cerebral hemispheres: A study of oscillatory brain activity and event-related potentials / Clin. Neurophysiol. 112(11):2057~2068
H. Oya / 2002 / Electrophysiological responses in the human amygdala discriminate emotion categories of complex visual stimuli / J. Neurosci. 22(21):9502~9512
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