大型抑郁症患者食欲下降的食物暗示处理的变化:与事件相关的潜在研究
Shanshan Lin1, Yiwei Du1, Yujie Xia1
1Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, China; Institute of Neuropsychiatry, Renmin Hospital of Wuhan University, Wuhan, China.
Appetite
|April 3, 2025
概括
严重抑郁症 (MDD) 患者的食欲下降显示食物认知发生变化,脑后部区域的脑活动减少. 与事件相关的潜力可以作为MDD中食欲丧失严重程度的生物标志物.
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.
- 认知科学 认知科学
背景情况:
- 食欲下降是主要抑郁症 (MDD) 的常见症状.
- 有限的研究存在于MDD患者的食物刺激的认知处理的胃口丧失.
- 需要客观的指标来评估MDD中食欲丧失的严重程度.
研究的目的:
- 研究健康对照组和有或没有食欲变化的MDD患者之间与食物相关的刺激的认知差异.
- 通过神经成像识别与这些认知变化相关的大脑区域.
- 评估事件相关潜力 (ERP) 作为食欲丧失的生物标志物的潜力.
主要方法:
- 149名受试者 (50名健康对照,52名有食欲下降的MDD,47名没有食欲变化的MDD) 参加.
- 维度安尼多尼亚评分尺度 (DARS) 测量了食欲的下降.
- 晚期积极潜力 (LPP) 评估了与食物相关的认知变化.
- 标准化低分辨率脑电磁断层扫描 (sLORETA) 分析了LPP源活动.
主要成果:
- 胃口下降的MDD患者对食物刺激的LPP幅度明显较低,表明注意力分配减少.
- 在食欲下降的MDD患者中,sLORETA揭示了LPP源激活在部区域 (舌环,,叶) 的减少.
- 在LPP振幅和DARS食品/饮料得分之间发现了中等的正相关性.
结论:
- 与没有食欲变化的患者相比,食欲下降的MDD患者表现出明显的与食物相关的认知处理缺陷.
- 变化的尾活动与MDD中食物刺激的注意处理与食欲丧失有关.
- LPP显示出作为一个神经生理生物标志物的潜力,用于量化MDD的食欲丧失严重程度.
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