Mikhaĭlova E S, Davydov D V
Research Center of Mental Health, Russian Academy of Medical Sciences, Moscow.
Zh Vyssh Nerv Deiat Im I P Pavlova. 1998 Sep-Oct;48(5):797-806.
Visual evoked potentials (VEPs) were recorded in 22 right-handed healthy subjects in the occipital, parietal, central, frontal and posterotemporal cortical areas during recognition and passive viewing of positive, negative, and neutral emotional facial expression. Peak latencies of N90, P150, and N180 VEP components appeared to be significantly shorter in response to the negative emotional expression than during administration of other facial stimuli. The differences were observed both during active recognition and passive viewing. Correct recognition was characterized by involvement of both hemispheres and high level of interhemispheric correlation between the peak latencies of P150 in the posterotemporal and of N180 in the frontal areas. It is suggested that the facial expressions are primarily recognized at the subthreshold level with participation of the posterotemporal areas. The role of the frontal areas is discussed in the completion of this process and making the correct decision about the image.
在22名右利手健康受试者识别和被动观看正性、负性和中性情绪面部表情时，记录了枕叶、顶叶、中央、额叶和后颞叶皮质区域的视觉诱发电位（VEP）。与其他面部刺激相比，对负性情绪表情的反应中，N90、P150和N180 VEP成分的峰潜伏期似乎显著缩短。在主动识别和被动观看过程中均观察到了差异。正确识别的特征是双侧半球均参与，且后颞叶区域P150的峰潜伏期与额叶区域N180的峰潜伏期之间半球间相关性较高。提示面部表情主要在阈下水平被识别，后颞叶区域参与其中。讨论了额叶区域在此过程完成及对图像做出正确判断中的作用。
