The interference of negative emotional stimuli on context processing in mildly depressed undergraduates

摘要

Although previous studies reported a relationship between cognitive dysfunction and depressive symptoms, whether context processing relates to symptoms of depression remains unclear. Hence, the question of whether context processing in depressed individuals is negatively specific or a general deficit also remains unanswered. The purpose of our study was to investigate whether mildly depressed individuals would evince a context processing deficit in response to negative emotional stimuli interference. We employed Emotional AX-CPT (AX version Continuous Performance Task), in which negative distractors were presented in the interval between cue and probe stimuli. ANOVAs revealed that when negative distractors were presented, the depressed group made more BX errors than the non-depressed group, and that the depressed group made more BX errors in response to negative distractors than to neutral distractors. Our results suggest that mildly depressed individuals show a context processing deficit when negatively charged stimuli interfere with retaining contextual information.