Department of Psychology, University of Portsmouth, UK.
Brain Cogn. 2010 Dec;74(3):324-31. doi: 10.1016/j.bandc.2010.09.001. Epub 2010 Oct 8.
Recent research has looked at whether the expectancy of an emotion can account for subsequent valence specific laterality effects of prosodic emotion, though no research has examined this effect for facial emotion. In the study here (n=58), we investigated this issue using two tasks; an emotional face perception task and a novel word task that involved categorising positive and negative words. In the face perception task a valence specific laterality effect was found for surprise (positive) and anger (negative) faces in the control but not expectancy condition. Interestingly, lateralisation differed for face gender, revealing a left hemisphere advantage for male faces and a right hemisphere advantage for female faces. In the word task, an affective priming effect was found, with higher accuracy when valence of picture prime and word target were congruent. Target words were also responded to faster when presented to the LVF versus RVF in the expectancy but not control condition. These findings suggest that expecting an emotion influences laterality processing but that this differs in terms of the perceptual/experience dimension of the task. Further, that hemispheric processing of emotional expressions appear to differ in the gender of the image.
最近的研究探讨了情感的预期是否可以解释韵律情感随后的效价特定的偏向效应，尽管没有研究检验过这种情绪对面部表情的影响。在本研究中（n=58），我们使用了两个任务来研究这个问题；一个是情绪面孔感知任务，另一个是涉及对积极和消极单词进行分类的新单词任务。在面孔感知任务中，在控制条件下但不是预期条件下，对惊喜（积极）和愤怒（消极）面孔的效价特异性偏向效应。有趣的是，偏向性因面孔性别而异，男性面孔呈现左半球优势，女性面孔呈现右半球优势。在单词任务中，发现了情感启动效应，当图片启动和单词目标的效价一致时，准确性更高。在预期条件下，与 RVF 相比，目标词在 LVF 呈现时反应更快，但在控制条件下则不然。这些发现表明，对情绪的预期会影响偏向处理，但在任务的感知/体验维度上有所不同。此外，情绪表达的半球加工似乎因图像的性别而异。
