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Perception of Dynamic Point Light Facial Expression
American Journal of Psychology ( IF 1.059 ) Pub Date : 2021-12-01 , DOI: 10.5406/amerjpsyc.134.4.0373
Yukari Takarae 1 , Michael K. McBeath 2 , R. Chandler Krynen 3
Affiliation  

Abstract This study uses point light displays both to investigate the roles of global and local motion analyses in the perception of dynamic facial expressions and to measure the information threshold for reliable recognition of emotions. We videotaped the faces of actors wearing black makeup with white dots while they dynamically produced each of 6 basic Darwin/Ekman emotional expressions. The number of point lights was varied to systematically manipulate amount of information available. For all but one of the expressions, discriminability (d′) increased approximately linearly with number of point lights, with most remaining largely discriminable with as few as only 6 point lights. This finding supports reliance on global motion patterns produced by facial muscles. However, discriminability for the happy expression was notably higher and largely unaffected by number of point lights and thus appears to rely on characteristic local motion, probably the unique upward curvature of the mouth. The findings indicate that recognition of facial expression is not a unitary process and that different expressions may be conveyed by different perceptual information, but in general, basic facial emotional expressions typically remain largely discriminable with as few as 6 dynamic point lights.

中文翻译:

动态点光面部表情感知

摘要 本研究使用点光显示来研究全局和局部运动分析在动态面部表情感知中的作用,并测量信息阈值以可靠地识别情绪。我们拍摄了化着黑妆和白点的演员的面部,同时他们动态地产生了 6 种基本的达尔文/埃克曼情绪表达。改变点光源的数量以系统地操纵可用信息量。对于除一个表达式之外的所有表达式,可辨别性 (d') 与点光源的数量大致呈线性关系,而大多数情况下,只要只有 6 个点光源,就可以在很大程度上进行辨别。这一发现支持对面部肌肉产生的整体运动模式的依赖。然而,快乐表情的可辨别性明显更高,并且在很大程度上不受点光源数量的影响,因此似乎依赖于特征性的局部运动,可能是嘴巴独特的向上弯曲。研究结果表明,面部表情的识别不是一个单一的过程,不同的表情可能通过不同的感知信息来传达,但一般来说,基本的面部表情通常在少至 6 个动态点光源的情况下仍然可以在很大程度上区分。
更新日期:2021-12-01
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