The Hebrew University of Jerusalem, Jerusalem, Israel.
University of California, Berkeley, CA, USA.
Sci Rep. 2020 May 21;10(1):8458. doi: 10.1038/s41598-020-65311-7.
Shared attention experiments examine the potential differences in function or behavior when stimuli are experienced alone or in the presence of others, and when simultaneous attention of the participants to the same stimulus or set is involved. Previous work has found enhanced reactions to emotional stimuli in social situations, yet these changes might represent enhanced communicative or motivational purposes. This study examines whether viewing emotional stimuli in the presence of another person influences attention to or memory for the stimulus. Participants passively viewed emotionally-valenced stimuli while completing another task (counting flowers). Each participant performed this task both alone and in a shared attention condition (simultaneously with another person in the same room) while EEG signals were measured. Recognition of the emotional pictures was later measured. A significant shared attention behavioral effect was found in the attention task but not in the recognition task. Compared to event-related potential responses for neutral pictures, we found higher P3b response for task relevant stimuli (flowers), and higher Late Positive Potential (LPP) responses for emotional stimuli. However, no main effect was found for shared attention between presence conditions. To conclude, shared attention may therefore have a more limited effect on cognitive processes than previously suggested.
共同注意实验研究了在单独或与他人一起体验刺激物时，以及当参与者同时关注同一刺激物或刺激物集时，功能或行为可能存在的差异。先前的研究发现，在社交情境中，人们对情绪刺激的反应增强，但这些变化可能代表了增强的交流或动机目的。本研究探讨了在他人在场的情况下观看情绪刺激是否会影响对刺激的注意力或记忆。参与者在完成另一项任务（数花朵）的同时被动观看情绪性刺激物。在测量 EEG 信号的同时，每个参与者都在单独和共同注意条件（与同一房间中的另一个人同时）下执行此任务。后来测量了对情绪图片的识别。在注意力任务中发现了显著的共同注意行为效应，但在识别任务中没有。与中性图片的事件相关电位反应相比，我们发现与任务相关的刺激（花朵）的 P3b 反应更高，而情绪刺激的晚期正电位（LPP）反应更高。然而，在存在条件之间没有发现共同注意的主要效应。因此，可以得出结论，共同注意对认知过程的影响可能比之前认为的要有限。
