Yang Yu-Fang, Gamer Matthias
Department of Psychology, University of Würzburg, Würzburg, Germany.
Division of Experimental Psychology and Neuropsychology, Department of Education and Psychology, Freie Universität Berlin, Berlin, Germany.
Sci Rep. 2025 Aug 19;15(1):30442. doi: 10.1038/s41598-025-12327-6.
Facial features transmit emotions but their effect on visual orienting and explicit emotion recognition is debated. Here we examined whether fixating on diagnostic features of emotional expressions-such as eye region for fear and the mouth for happiness-affects saccadic targeting and improves recognition accuracy. Across two pre-registered experiments, participants viewed fearful, happy, and neutral faces for short intervals (50 or 150 ms) while the initial fixation location was manipulated. Although such brief stimulation does not allow for visual exploration, the faces still elicited reflexive saccades that occurred after stimulus offset. These saccades were modulated by the emotional expressions indicating a consistent preferential saccadic orienting towards diagnostic features, even with limited exposure. As this effect disappeared for inverted faces, it can be attributed to an extrafoveal processing of facial features instead of an attentional orienting towards physically salient image regions. Participants' recognition accuracy was unaffected by the foveated facial feature, but this observation might also be due to ceiling effects in performance. Collectively, these findings contribute to understanding the attentional mechanisms of feature-based processing in the perception of emotional facial expressions.
面部特征传递情感,但它们对视觉定向和明确的情感识别的影响存在争议。在这里,我们研究了注视情感表达的诊断特征——如恐惧时的眼部区域和开心时的嘴部——是否会影响扫视目标并提高识别准确性。在两项预先注册的实验中,参与者短时间(50或150毫秒)观看恐惧、开心和中性的面孔,同时操纵初始注视位置。尽管如此短暂的刺激不允许进行视觉探索,但面孔仍会引发刺激消失后出现的反射性扫视。这些扫视受到情感表达的调节,表明即使暴露时间有限,也会持续优先向诊断特征进行扫视定向。由于这种效应在倒置面孔中消失,它可归因于面部特征的中央凹外处理,而非对物理上显著图像区域的注意力定向。参与者的识别准确性不受中央凹注视的面部特征影响,但这一观察结果也可能是由于表现上的天花板效应。总的来说,这些发现有助于理解在情感面部表情感知中基于特征的处理的注意力机制。