Research School of Psychology, The Australian National University.
School of Psychology, Curtin University.
Emotion. 2022 Apr;22(3):572-585. doi: 10.1037/emo0000764. Epub 2020 Jun 1.
One of the fundamental factors maintaining social anxiety is biased attention toward threatening facial expressions. Typically, this bias has been conceptualized as driven by an overactive bottom-up attentional system; however, this potentially overlooks the role of top-down attention in being able to modulate this bottom-up bias. Here, the role of top-down mechanisms in directing attention toward emotional faces was assessed with a modified dot-probe task, in which participants were given a top-down cue ("happy" or "angry") to attend to a happy or angry face on each trial, and the cued face was either presented with a face of the other emotion (angry, happy) or a neutral face. This study found that social anxiety was not associated with differences in shifting attention toward cued angry faces. However, participants with higher levels of social anxiety were selectively impaired in attentional shifting toward a cued happy face when it was paired with an angry face, but not when paired with a neutral face. The results indicate that top-down attention can be used to orient attention to emotional faces, but that higher levels of social anxiety are associated with selective deficits in top-down control of attention in the presence of threat. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
维持社交焦虑的一个基本因素是对威胁性面部表情的偏见性注意。通常,这种偏见被认为是由过度活跃的自下而上的注意系统驱动的;然而,这可能忽略了自上而下的注意力在调节这种自下而上的偏见方面的作用。在这里,通过修改后的点探测任务来评估自上而下的机制在引导注意力指向情绪面孔方面的作用,在该任务中,参与者会收到自上而下的提示(“开心”或“生气”),要求他们在每次试验中关注开心或生气的面孔,而提示的面孔要么呈现另一种情绪(生气、开心)的面孔,要么呈现中性面孔。这项研究发现,社交焦虑与将注意力转移到提示的生气面孔上的差异无关。然而,当提示的开心面孔与生气面孔配对时,社交焦虑程度较高的参与者在注意转移方面存在选择性缺陷,但当与中性面孔配对时则没有。研究结果表明,自上而下的注意力可以用来引导注意力指向情绪面孔,但较高的社交焦虑水平与在存在威胁的情况下,自上而下的注意力控制选择性缺陷有关。