Abstract
AbstractHuman visual search performance in dynamic environment will be affected by the moving speed of background and object. Eye movement data can help us understand the reasons for this performance difference. This study investigated the changes of eye movement index of visual search under different task difficulty (high, low) and different moving speed (low, high). The results show that the moving speed of the object will affect the fixation numbers, fixation time, saccade amplitude and saccade speed. With the increase of speed, the number of fixation will increase significantly, and the fixation time, saccade amplitude and saccade speed will decrease significantly. Moreover, this index has nothing to do with the difficulty of the search task in this study. The research results can provide guidance for visual search design in dynamic environment.KeywordsVisual searchHuman factorsFixation numberSaccade amplitudeFixation duration
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