State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
J Zhejiang Univ Sci B. 2012 Mar;13(3):221-30. doi: 10.1631/jzus.B1100063.
The purpose of this study was to investigate the effects of the duration of expressions on the recognition of microexpressions, which are closely related to deception.
In two experiments, participants were briefly (from 20 to 300 ms) shown one of six basic expressions and then were asked to identify the expression.
The results showed that the participants' performance in recognition of microexpressions increased with the duration of the expressions, reaching a turning point at 200 ms before levelling off. The results also indicated that practice could improve the participants' performance.
The results of this study suggest that the proper upper limit of the duration of microexpressions might be around 1/5 of a second and confirmed that the ability to recognize microexpressions can be enhanced with practice.
本研究旨在探讨表情持续时间对视错觉识别的影响，视错觉与欺骗密切相关。
在两项实验中，参与者短暂地（20 至 300 毫秒）观看六种基本表情之一，然后要求他们识别表情。
结果表明，参与者识别微表情的表现随着表情持续时间的增加而提高，在 200 毫秒达到转折点后趋于平稳。结果还表明，练习可以提高参与者的表现。
本研究结果表明，微表情持续时间的适当上限可能在 1/5 秒左右，并证实了通过练习可以增强识别微表情的能力。
