a Department of Psychology , Goldsmiths, University of London , London , UK.
Cogn Emot. 2014 Apr;28(3):541-9. doi: 10.1080/02699931.2013.839939. Epub 2013 Sep 25.
Negative moods have been associated with a tendency to prioritise local details in visual processing. The current study investigated the relation between depression and visual processing using the Navon task, a standard task of local and global processing. In the Navon task, global stimuli are presented that are made up of many local parts, and the participants are instructed to report the identity of either a global or a local target shape. Participants with a low self-reported level of depression showed evidence of the expected global processing bias, and were significantly faster at responding to the global, compared with the local level. By contrast, no such difference was observed in participants with high levels of depression. The reduction of the global bias associated with high levels of depression was only observed in the overall speed of responses to global (versus local) targets, and not in the level of interference produced by the global (versus local) distractors. These results are in line with recent findings of a dissociation between local/global processing bias and interference from local/global distractors, and support the claim that depression is associated with a reduction in the tendency to prioritise global-level processing.
消极情绪与视觉处理中优先关注局部细节的倾向有关。本研究使用纳冯任务（一种标准的局部和整体处理任务）来研究抑郁与视觉处理之间的关系。在纳冯任务中，呈现由许多局部组成的全局刺激，并且要求参与者报告全局或局部目标形状的身份。自我报告抑郁程度较低的参与者表现出预期的全局处理偏向，并且与局部水平相比，对全局水平的反应明显更快。相比之下，在抑郁程度较高的参与者中没有观察到这种差异。与高水平的抑郁相关的全局偏向的减少仅在对全局（相对于局部）目标的总体反应速度中观察到，而不在全局（相对于局部）分心物产生的干扰水平中观察到。这些结果与最近发现的局部/全局处理偏向与局部/全局分心物干扰之间的分离一致，并支持这样一种观点，即抑郁与优先考虑全局处理水平的倾向降低有关。
