当前位置: X-MOL 学术Proc. Natl. Acad. Sci. U.S.A. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Temporal self-compression: Behavioral and neural evidence that past and future selves are compressed as they move away from the present [Psychological and Cognitive Sciences]
Proceedings of the National Academy of Sciences of the United States of America ( IF 11.1 ) Pub Date : 2021-12-07 , DOI: 10.1073/pnas.2101403118
Sasha Brietzke 1 , Meghan L Meyer 2
Affiliation  

A basic principle of perception is that as objects increase in distance from an observer, they also become logarithmically compressed in perception (i.e., not differentiated from one another), making them hard to distinguish. Could this basic principle apply to perhaps our most meaningful mental representation: our own sense of self? Here, we report four studies that suggest selves are increasingly non-discriminable with temporal distance from the present as well. In Studies 1 through 3, participants made trait ratings across various time points in the past and future. We found that participants compressed their past and future selves, relative to their present self. This effect was preferential to the self and could not be explained by the alternative possibility that individuals simply perceive arbitrary self-change with time irrespective of temporal distance. In Study 4, we tested for neural evidence of temporal self-compression by having participants complete trait ratings across time points while undergoing functional MRI. Representational similarity analysis was used to determine whether neural self-representations are compressed with temporal distance as well. We found evidence of temporal self-compression in areas of the default network, including medial prefrontal cortex and posterior cingulate cortex. Specifically, neural pattern similarity between self-representations was logarithmically compressed with temporal distance. Taken together, these findings reveal a “temporal self-compression” effect, with temporal selves becoming increasingly non-discriminable with distance from the present.



中文翻译:

时间自我压缩:行为和神经证据表明过去和未来的自己在远离现在时会受到压缩 [心理和认知科学]

感知的一个基本原理是,随着物体与观察者的距离增加,它们在感知中也会呈对数压缩(即,彼此之间没有区别),从而使它们难以区分。这个基本原则能否适用于我们最有意义的心理表征:我们自己的自我意识?在这里,我们报告了四项研究,这些研究表明,在与现在的时间距离上,自我也越来越不可区分。在研究 1 到 3 中,参与者对过去和未来的不同时间点进行了特质评级。我们发现参与者相对于现在的自我压缩了过去和未来的自我。这种效应优先于自我,不能用另一种可能性来解释,即个人只是随时间感知任意的自我变化,而不管时间距离如何。在研究 4 中,我们通过让参与者在接受功能性 MRI 的同时完成跨时间点的特征评级来测试时间自我压缩的神经证据。表征相似性分析用于确定神经自我表征是否也被时间距离压缩。我们在默认网络区域发现了时间自我压缩的证据,包括内侧前额叶皮层和后扣带回皮层。具体来说,自我表征之间的神经模式相似性随着时间距离被对数压缩。综上所述,这些发现揭示了一种“时间自我压缩”效应,

更新日期:2021-12-01
down
wechat
bug