Department of Psychology.
Neuropsychology. 2022 Jul;36(5):443-455. doi: 10.1037/neu0000804. Epub 2022 Apr 7.
To resolve inconsistencies in the literature regarding the dominance of the right cerebral hemisphere (RH) in emotional face perception, specifically investigating the role of the intensity of emotional expressions, different emotions, and conscious perception.
The study used an online version of the well-established emotional chimeric face task (ECFT) in which participants judged which side of a chimeric face stimulus was more emotional. We tested the laterality bias in the ECFT across six basic emotions and experimentally modified the intensity of the emotional facial expression from neutral to fully emotional expressions, in incremental steps of 20%.
The results showed an overall left hemiface bias across all emotions, supporting the RH hypothesis of emotional lateralization. However, the left hemiface bias decreased with decreasing intensity of the emotional facial expression.
The results provide further support for the RH hypothesis and suggest that the RH dominance in emotional face perception may be affected by task difficulty and visual perception strategy. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
解决文献中关于右半球（RH）在情绪面孔感知中占主导地位的不一致性，特别是研究情绪表达强度、不同情绪和意识感知的作用。
该研究使用了一种经过验证的在线情绪嵌合面孔任务（ECFT），参与者在其中判断嵌合面孔刺激的哪一侧更具情绪性。我们在 ECFT 中测试了六种基本情绪的侧化偏差，并通过逐步增加 20%的强度，从中性到完全情绪化的表情来实验性地改变情绪面部表情的强度。
结果显示，在所有情绪中都存在整体左半脸偏侧化，支持了情绪侧化的 RH 假设。然而，随着情绪面部表情强度的降低，左半脸偏侧化减少。
结果进一步支持了 RH 假设，并表明 RH 在情绪面孔感知中的主导地位可能受到任务难度和视觉感知策略的影响。（PsycInfo 数据库记录（c）2022 APA，保留所有权利）。
