期刊
BIOLOGICAL PSYCHOLOGY
卷 170, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.biopsycho.2022.108310
关键词
EEG/ERPs; Attention task; Line; picture; or emotion discrimination; EPN; LPP; IAPS
This study investigated the effects of attention on the event-related potential (ERP) to negative and neutral pictures. The results showed that there were interactions between attention tasks and emotion processing, and the impact of attention on emotional differences depended on the time and ERP components.
Several components of the event-related potential (ERP) are amplified by emotional compared to neutral pictures. This study (N = 80) investigated systematically how attention to specific stimulus features influences ERPs to briefly presented (100 ms) negative and neutral pictures. Participants had to discriminate either (i) the orientation of overlaid lines, (ii) if the picture content was animate or inanimate, or (iii) if the emotional content was negative or neutral. ERP results showed interactions between the attention task and emotion processing for the early posterior negativity (EPN) and the late positive potential (LPP). For the EPN, attention to distracting perceptual information reduced emotional differences, while at the level of the LPP, emotion effects were selectively amplified when participants attended to the emotional content. These findings reveal the time dependent effects of feature-based attention tasks on ERPs to emotional pictures.
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