在适应过程中,皮层中线结构的活动受到自我解释变化的调节。

Pin-Hao A Chen, Dylan D Wagner, William M Kelley, Todd F Heatherton
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引用次数: 20

摘要

新移民到另一种文化通常会经历一段文化适应期,在此期间他们会表现出自我理解的变化。在这里,我们研究了这个文化适应时期如何改变与自我参照认知相关的大脑活动。27名母语为中文的新移民完成了一项特质判断任务,在这项任务中,他们判断一系列心理特征是否适用于自己,以及这些特征是否适用于他们的母亲。参与者在两个时间间隔内进行扫描:在他们到达美国的前两个月内(时间1),以及在首次扫描后的六个月内(时间2)。结果已经揭示了显著的自我vs。内侧前额叶皮层(MPFC)和后扣带皮层(PCC)在时间1时的母细胞分化。然而,在时间2,这种模式发生了分歧,这取决于移民是否变得更像他们的原始文化。也就是说,对于那些变得不那么像东方人的移民来说,自我和母亲的差异仍然存在,而对于那些变得更像东方人的参与者来说,大脑皮层中线结构的自我和母亲的差异消失了。这些发现支持了这样一种观点,即在文化适应过程中,自我解释的变化反映在与自我参照加工相关的大脑结构(即MPFC和PCC)的相对参与中,当判断与自己或亲密他人有关的特征时。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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ACTIVITY IN CORTICAL MIDLINE STRUCTURES IS MODULATED BY SELF-CONSTRUAL CHANGES DURING ACCULTURATION.

Recent immigrants to another culture generally experience a period of acculturation during which they show self-construal changes. Here, we examine how this acculturation period alters brain activity associated with self-referential cognition. Twenty-seven native Chinese-speaking recent immigrants completed a trait-judgment task in which they judged whether a series of psychological traits applied to themselves and, separately, whether these traits applied to their mothers. Participants were scanned at two intervals: within the first two months of their arrival in the United States (Time 1), and also six months after the initial scan (Time 2). Results already revealed a significant self-vs.-mother differentiation at Time 1 in the medial prefrontal cortex (MPFC) and posterior cingulate cortex (PCC). However, at time 2, this pattern diverged depending on whether immigrants became more or less like their original culture. That is to say, for immigrants who became less like Easterners, the self vs. mother difference remained, whereas for participants who became even more like Easterners, the self vs. mother difference in cortical midline structures disappeared. These findings support the notion that self-construal changes during the process of acculturation are reflected in the relative engagement of brain structures implicated in self-referential processing (i.e., MPFC and PCC) when judging traits with reference to oneself or a close other.

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