Klucharev Vasily, Sams Mikko
Laboratory of Computational Engineering, Helsinki University of Technology, LCE, PO Box 9203, FIN-02015 HUT, Finland.
Neuroreport. 2004 Mar 22;15(4):621-5. doi: 10.1097/00001756-200403220-00010.
Event related potentials (ERPs) were recorded from 11 subjects watching photographs of angry and happy faces with different gaze directions. ERPs to right averted gaze differed from those to straight and left averted gaze at 85 and 460 ms whereas ERPs to happy and angry expressions differed at 115, 330 and 380 ms. We suggest that short-latency effects, maximal over occipital cortex, reflect the involvement of visual cortex in the early analysis of socially-relevant stimuli. Interaction of gaze and expressions was reflected in ERPs at 270 - 450 ms. We conclude that gaze and emotional expressions are analyzed in parallel at the early stages of visual processing. The interaction of these two processing streams starts no earlier than at 270 ms.
从11名观看不同注视方向的愤怒和快乐面孔照片的受试者身上记录了事件相关电位（ERP）。在85毫秒和460毫秒时，对向右回避注视的ERP与对直视和向左回避注视的ERP不同，而在115毫秒、330毫秒和380毫秒时，对快乐和愤怒表情的ERP不同。我们认为，在枕叶皮质上最大的短潜伏期效应反映了视觉皮质在社会相关刺激的早期分析中的参与。注视和表情的相互作用在270 - 450毫秒的ERP中得到反映。我们得出结论，在视觉处理的早期阶段，注视和情绪表情是并行分析的。这两个处理流的相互作用不早于270毫秒开始。
