情感是一种复杂多变的心理生理现象，可以影响几乎所有的认知功能，包括调制注意的分配。研究表明情感刺激能捕获和维持注意，然而正常的情感内在状态如何调制视觉注意的分配机制尚不清楚。眼动与视觉注意紧密联系，是实时、直接检测行为输出的有效方法，因此成为研究视觉注意机制的常用工具。然而利用眼动技术探讨情感状态对视觉注意的调制机制的研究较少。.因此本项目针对情感状态对视觉注意的调制机制问题，设计不同实验采集眼动数据，探讨以下问题：1)情感状态（开心、伤心、恐惧、中性）对注意转移的调制；2）情感状态对注意在空间上的转向（attention redirection）能力的调制；3）情感状态对注意的动态分配（dynamic attention allocation）的调制。提取的眼动参数有助于深入理解情感状态对视觉注意分配的影响，并为揭示情感障碍人群的注意机制提供有效的生物学指标和科学依据。

Emotion is a complex psychophysiological experience and widely influences cognitive functions. Studies have found that emotional stimuli capture attention and hold it, but it is not clear how normal emotional state modulates attentional allocation. Eye movements are closely related to visual attention and provide a real-time measurement of behavoral output， therefore usually serve as a tool of studying visual attention mechanism. However, surprisingly few studies used eye movements to investigate the modulatory effects of emotional state in normal people...Therefore, the current project aims to investigate the modulatory effects of normal emotional state on visual attention via eye movements analyses during psychophysical experiments desinged to answer the following three questions: 1) How does emotional state (e.g. happy, sad, fearful, and neutral) modulate attention shift during visual search? 2) Whether and how emotional state modulates ability of attention redirecting? 3) How does emotional state modulate dynamic attentional allocation during attention shift? Selection of relevant eye movements parameters would help to understand the effects of emotional state on attentional allocation, and would provide efficient and economic experimental tool of investigating attentional mechanism in affetive disorders.