Time Course of Electrocortical Processing of Food Stimuli in Adolescent Anorexia Nervosa

IF 4.3 2区医学 Q1 NUTRITION & DIETETICS

International Journal of Eating Disorders Pub Date : 2025-07-18 DOI:10.1002/eat.24510

Julia Nannt, Ines Wolz, Jan Vagedes, Jennifer Svaldi

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引用次数: 0

Abstract

Objective

Anorexia nervosa (AN) typically manifests during adolescence and is linked to significant psychological and physical sequelae. A better understanding of the underlying maintenance mechanisms of adolescent AN is therefore crucial. Cognitive behavioral theories emphasize the influence of cognitive biases in the processing of disorder-relevant stimuli.

Method

The current study investigated attentional bias to high- and low-calorie food in female adolescents with AN (n = 31) and without AN (n = 35). An event-related potentials study utilizing prolonged stimulus presentation in an attention task was conducted.

Results

Against our hypotheses, the results suggest an early avoidance of (i.e., reduced early posterior negativity) and an increased motivated attention (i.e., enhanced P300) towards high-calorie food in females with AN relative to controls.

Discussion

The automated early avoidance indicates a decline in the positive incentive value of high-calorie food, which signals a loss of the appetitive character of these foods. The increased top-down attention towards food may be due to an increased negative emotional salience activating aversive motivational systems.

Abstract Image

查看原文本刊更多论文

青少年厌食症神经皮层电加工食物刺激的时间过程。

目的：神经性厌食症（AN）通常表现在青春期，并与显著的心理和生理后遗症有关。因此，更好地了解青少年AN的潜在维持机制是至关重要的。认知行为理论强调认知偏差对障碍相关刺激处理的影响。方法：本研究调查了患有AN （n = 31）和未患有AN （n = 35）的女性青少年对高热量和低热量食物的注意偏倚。在注意任务中利用长时间刺激呈现进行了事件相关电位研究。结果：与我们的假设相反，结果表明，相对于对照组，an女性对高热量食物的早期回避（即减少早期后极性）和增加的动机注意（即增强的P300）。讨论：自动的早期回避表明了高热量食物的积极激励价值的下降，这标志着这些食物的食欲特征的丧失。自上而下对食物的关注增加可能是由于负面情绪显著性的增加激活了厌恶的动机系统。

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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来源期刊

International Journal of Eating Disorders 医学-精神病学

CiteScore

10.00

自引率

12.70%

发文量

204

审稿时长

4-8 weeks

期刊介绍： Articles featured in the journal describe state-of-the-art scientific research on theory, methodology, etiology, clinical practice, and policy related to eating disorders, as well as contributions that facilitate scholarly critique and discussion of science and practice in the field. Theoretical and empirical work on obesity or healthy eating falls within the journal’s scope inasmuch as it facilitates the advancement of efforts to describe and understand, prevent, or treat eating disorders. IJED welcomes submissions from all regions of the world and representing all levels of inquiry (including basic science, clinical trials, implementation research, and dissemination studies), and across a full range of scientific methods, disciplines, and approaches.