Perceptual regulation of ideal body shape in young women with body shame: An ERP study of cognitive reappraisal

IF 2.6 3区心理学 Q2 BEHAVIORAL SCIENCES

Behavioural Brain Research Pub Date : 2025-06-04 DOI:10.1016/j.bbr.2025.115690

Zhennan Liu , Yinying Hu , Haoyue Qian , Xiangping Gao

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引用次数: 0

Abstract

Media portrayals of idealized bodies reinforce appearance-based comparisons, leading to body dissatisfaction and associated cognitive and emotional disturbances among women. Integrating objectification theory and emotion regulation frameworks, this event-related potential (ERP) study examined how cognitive reappraisal affects attractiveness evaluations and attentional biases toward idealized bodies among women experiencing body shame. Fifty-one women completed body shame assessments and were randomly assigned to cognitive reappraisal group (CRG, n = 25) or control group (CG, n = 26). A mixed factorial design (Group: CRG vs. CG × Stimulus Type: Ideal vs. Neutral Body × Time: Pre-test vs. Post-test) assessed attractiveness ratings and electroencephalographic (EEG) responses before and after reappraisal. The cognitive reappraisal group received instructions between pre- and post-tests; all participants then completed an attention bias task with EEG recording. Behavioral results revealed that cognitive reappraisal significantly reduced attractiveness ratings of idealized bodies and altered attentional biases. Importantly, mediation analyses indicated that cognitive reappraisal mediated the relationship between body shame and attentional biases. ERP analyses indicated cognitive reappraisal increased late positive potential (LPP) amplitudes during evaluation of idealized bodies. Additionally, cognitive reappraisal modulated early attentional N2 amplitudes, predicted by reappraisal-induced LPP changes. Findings suggest cognitive reappraisal regulates perceptions of idealized bodies in body-shamed women via prefrontal cortical mechanisms, with LPP and N2 as key neural markers.

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年轻女性身体羞耻感对理想体型的知觉调节：认知重评价的ERP研究

媒体对理想化身体的描绘强化了以外表为基础的比较，导致女性对身体不满以及相关的认知和情感障碍。结合客观化理论和情绪调节框架，本研究考察了认知重评价如何影响女性对理想身体的吸引力评价和注意偏差。51名女性完成了身体羞耻感评估，随机分为认知再评估组（CRG, n = 25）和对照组（CG, n = 26）。采用混合因子设计（组：CRG vs. CG ×刺激类型：理想体vs.中性体×时间：测试前vs.测试后）评估重新评估前后的吸引力评分和脑电图（EEG）反应。认知重评组在测试前后接受指导；然后，所有参与者都完成了一项注意偏差任务，并进行了脑电图记录。行为学结果显示，认知重新评估显著降低了理想化身体的吸引力评级，并改变了注意力偏见。重要的是，中介分析表明，认知重评价介导了身体羞耻和注意偏见之间的关系。ERP分析表明，认知重评价在理想化身体评价过程中增加了晚期正电位（LPP）振幅。此外，认知重评价调节早期注意N2振幅，可通过重评价诱导的LPP变化预测。研究结果表明，认知重评价通过前额叶皮质机制调节身体羞耻感女性对理想身体的感知，LPP和N2是关键的神经标志物。

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来源期刊

Behavioural Brain Research 医学-行为科学

CiteScore

5.60

自引率

0.00%

发文量

383

审稿时长

61 days

期刊介绍： Behavioural Brain Research is an international, interdisciplinary journal dedicated to the publication of articles in the field of behavioural neuroscience, broadly defined. Contributions from the entire range of disciplines that comprise the neurosciences, behavioural sciences or cognitive sciences are appropriate, as long as the goal is to delineate the neural mechanisms underlying behaviour. Thus, studies may range from neurophysiological, neuroanatomical, neurochemical or neuropharmacological analysis of brain-behaviour relations, including the use of molecular genetic or behavioural genetic approaches, to studies that involve the use of brain imaging techniques, to neuroethological studies. Reports of original research, of major methodological advances, or of novel conceptual approaches are all encouraged. The journal will also consider critical reviews on selected topics.