Increasing perceived happiness in neutral faces by posing a smile: An electroencephalography (EEG) frequency-tagging study.

IF 3.6 2区心理学 Q1 PSYCHOLOGY, EXPERIMENTAL

Emotion Pub Date : 2025-09-01 Epub Date: 2025-03-20 DOI:10.1037/emo0001514

Joshua Baker, Stephanie Van der Donck, Bart Boets, Sebastian Korb

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引用次数: 0

Abstract

Previous research using electroencephalography has so far failed to provide strong and convincing evidence for the effects of facial feedback on the visual processing of emotional facial expressions. To fill this gap, we harnessed the power of electroencephalography frequency tagging, which offers excellent objective indication of implicit stimulus processing with high signal-to-noise ratio. Healthy adult participants (N = 47) from diverse backgrounds (tested in 2023/2024) viewed rare happy and angry oddball faces, interspersed with frequent neutral faces, while either producing a smile or keeping a neutral face. Smiling resulted in reduced neural discrimination of happy versus neutral faces over the left occipitotemporal region, as shown by decreased power at the oddball frequency. These findings could reflect that voluntary smiling, and the associated change in facial feedback, leads to neutral faces being perceived as happier, providing evidence for the facial feedback hypothesis. (PsycInfo Database Record (c) 2025 APA, all rights reserved).

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通过摆出微笑来增加中性面孔的幸福感：一项脑电图（EEG）频率标记研究。

迄今为止，利用脑电图进行的研究未能提供有力和令人信服的证据，证明面部反馈对情绪面部表情视觉处理的影响。为了填补这一空白，我们利用了脑电图频率标记的强大功能，它能以高信噪比客观地显示内隐刺激处理过程。来自不同背景的健康成年参与者（N = 47）（2023/2024 年接受测试）观看了罕见的快乐和愤怒的怪脸，其中穿插着频繁出现的中性脸，同时他们要么面带微笑，要么保持中性脸。微笑会降低左枕颞区神经对快乐和中性面孔的辨别力，这表现在奇异面孔频率的功率下降。这些发现可能反映了自愿微笑以及与之相关的面部反馈变化导致中性面孔被认为更快乐，从而为面部反馈假说提供了证据。(PsycInfo Database Record (c) 2025 APA, 版权所有）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Emotion PSYCHOLOGY, EXPERIMENTAL-

CiteScore

8.40

自引率

7.10%

发文量

325

审稿时长

8 weeks

期刊介绍： Emotion publishes significant contributions to the study of emotion from a wide range of theoretical traditions and research domains. The journal includes articles that advance knowledge and theory about all aspects of emotional processes, including reports of substantial empirical studies, scholarly reviews, and major theoretical articles. Submissions from all domains of emotion research are encouraged, including studies focusing on cultural, social, temperament and personality, cognitive, developmental, health, or biological variables that affect or are affected by emotional functioning. Both laboratory and field studies are appropriate for the journal, as are neuroimaging studies of emotional processes.