在避免/限制性食物摄入障碍中,对食物线索的神经反应
Jennifer J Thomas1,2,3, Laura Holsen2,3,4, Avery L Van De Water2,4,5
1Eating Disorders Clinical and Research Program, Massachusetts General Hospital, Boston.
JAMA network open
|February 18, 2025
概括
神经成像揭示了与恐惧和感官处理相关的区域中大脑活动的增加,这些区域是患有回避性/限制性食物摄入障碍 (ARFID) 的人. 这项研究确定了ARFID基础上的新型神经生物学电路,为避免食物行为提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 医疗成像医学成像
背景情况:
- 避免/限制性食物摄入障碍 (ARFID) 的神经生物学仍然在很大程度上未被探索.
- 了解ARFID的神经基础对于开发有效的干预措施至关重要.
研究的目的:
- 在暴露于与食物相关的刺激时,研究ARFID和健康对照 (HC) 个体之间大脑激活模式的差异.
- 探索ARFID不同表型的神经相关性:对食物的恐惧,对饮食缺乏兴趣和感官敏感性.
主要方法:
- 一项涉及110名患有ARFID的儿童,青少年和年轻人以及年龄相匹配的HC参与者的病例控制研究.
- 功能磁共振成像 (fMRI) 用于测量大脑活动对食物图像和中性物体的反应.
- 参与者接受了结构化采访,以评估ARFID的存在和表型.
主要成果:
- 与HC相比,ARFID患者在前带带皮层 (ACC),感官关联皮层和补充运动皮层的激活显著增加.
- 在ARFID恐惧小组表现出高桃体激活,而在ARFID缺乏兴趣的小组显示下丘脑激活减少.
- 在ARFID感官敏感性小组中,ACC和体感官皮层活化增加.
结论:
- 研究结果表明,ARFID患者在对视觉食物刺激的反应中,特定大脑区域的普遍过度激活.
- 这些结果表明,与ARFID及其多样化的表型呈现相关的新型神经生物学电路.
- 观察到的大脑激活模式与不同ARFID亚型中食物避免的建议机制保持一致.
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