Biological and Experimental Psychology Group, Queen Mary University of London, UK.
Emotion. 2012 Feb;12(1):174-9. doi: 10.1037/a0024416. Epub 2011 Jun 27.
Empirical tests of the "right hemisphere dominance" versus "valence" theories of emotion processing are confounded by known sex differences in lateralization. Moreover, information about the sex of the person posing an emotion might be processed differently by men and women because of an adaptive male bias to notice expressions of threat and vigilance in other male faces. The purpose of this study was to investigate whether sex of poser and emotion displayed influenced lateralization in men and women by analyzing "laterality quotient" scores on a test which depicts vertically split chimeric faces, formed with one half showing a neutral expression and the other half showing an emotional expression. We found that men (N = 50) were significantly more lateralized for emotions indicative of vigilance and threat (happy, sad, angry, and surprised) in male faces relative to female faces and compared to women (N = 44). These data indicate that sex differences in functional cerebral lateralization for facial emotion may be specific to the emotion presented and the sex of face presenting it.
对情绪处理的“右半球优势”与“效价”理论的实证检验受到已知的侧化性别差异的混淆。此外，由于男性对其他男性面孔的威胁和警惕表情的注意存在适应性偏见，因此关于表现情绪的人的性别的信息可能会被男性和女性以不同的方式处理。本研究旨在通过分析用垂直分裂的嵌合面孔进行的测试中的“侧化商数”分数，来研究表现者的性别和所显示的情绪是否会影响男性和女性的侧化，这些面孔的一半显示中性表情，另一半显示情绪表情。我们发现，男性（N = 50）在男性面孔上对警觉和威胁情绪（高兴、悲伤、愤怒和惊讶）的侧化明显大于女性面孔，也大于女性（N = 44）。这些数据表明，面部情绪功能大脑侧化的性别差异可能特定于呈现的情绪和呈现它的面孔的性别。
