青春期身体评估的发展与支持自我概念的神经区域有关。

Yara J Toenders, Hannah Dorsman, Renske van der Cruijsen, Eveline A Crone
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引用次数: 0

摘要

在整个青春期,自我概念(对自己是谁的评价)和身体都会发生变化。这两个过程可能会影响身体形象的发展,而身体形象是一个复杂的概念,它包括一个人的想法、感受和对自己身体的认知。本研究旨在更好地了解身体形象的发展与自我概念的发展及其神经相关性的关系。研究人员对莱顿自我概念纵向研究中的青少年(11-24 岁)进行了连续三年的跟踪调查(NT1=160、NT2=151 和 NT3=144)。他们的身体形象通过身材评分量表和身体不满意度问卷进行测量。身体估计值是根据相对于实际体重指数的身材评分计算得出的。此外,参与者还在一项 fMRI 任务中评估了自己的体貌特征。结果表明,随着年龄的增长,身体估计和身体不满意度都会增加。在身体自我评价过程中,下顶叶(IPL)的激活增强与较低的身体估计值有关,这意味着对于那些认为自己比实际体型大的人来说,参与思考自己身体特征的神经网络更为活跃。IPL 活动在青春期持续发展,表明神经发育与身体感知之间存在相互作用。这些发现凸显了情感、知觉和生物因素在塑造身体形象方面的复杂相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Developing body estimation in adolescence is associated with neural regions that support self-concept.

Both self-concept, the evaluation of who you are, and the physical body undergo changes throughout adolescence. These two processes might affect the development of body image, a complex construct that comprises one's thoughts, feelings, and perception of one's body. This study aims to better understand the development of body image in relation to self-concept development and its neural correlates. Adolescents (aged 11-24) from the longitudinal Leiden Self-Concept study were followed for three consecutive years (NT1 = 160, NT2 = 151, and NT3 = 144). Their body image was measured using a figure rating scale and body dissatisfaction questionnaire. Body estimation was calculated based on figure ratings relative to their actual body mass index (BMI). Additionally, participants evaluated their physical appearance traits in an functional magnetic resonance imaging (fMRI) task. Results revealed that body estimation and body dissatisfaction increased with age. Heightened inferior parietal lobe (IPL) activation during physical self-evaluation was associated with lower body estimation, meaning that the neural network involved in thinking about one's physical traits is more active for individuals who perceive themselves as larger than they are. IPL activity showed continued development during adolescence, suggesting an interaction between neural development and body perception. These findings highlight the complex interplay between affective, perceptual, and biological factors in shaping body image.

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