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Published on: June 17, 2019
The course of visual searching to a target in a fixed location: electrophysiological evidence from an emotional
Guangheng Dong1, Lizhu Yang, Yue Shen
1Department of Psychology, Zhejiang Normal University, 688# Yingbin Road, Jinhua City, Zhejiang Province 321000, China. dongguangheng@zjnu.edu.cn
Abstract:
The present study investigated the course of visual searching to a target in a fixed location, using an emotional flanker task. Event-related potentials (ERPs) were recorded while participants performed the task. Emotional facial expressions were used as emotion-eliciting triggers. The course of visual searching was analyzed through the emotional effects arising from these emotion-eliciting stimuli. The flanker stimuli showed effects at about 150-250 ms following the stimulus onset, while the effect of target stimuli showed effects at about 300-400 ms. The visual search sequence in an emotional flanker task moved from a whole overview to a specific target, even if the target always appeared at a known location. The processing sequence was "parallel" in this task. The results supported the feature integration theory of visual search.
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