改变海马的有效连接性预测了肥胖儿童的BMI和食物方法行为
Wei Li1, Ximei Chen1, Xiao Gao1,2
1Faculty of Psychology, Southwest University, Chongqing 400715, China.
International journal of clinical and health psychology : IJCHP
|January 29, 2025
概括
超重的儿童表现出海马和体感皮层之间的大脑连接发生变化. 这些神经变化预测未来的体重指数 (BMI) 和饮食行为,为儿童肥胖提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 儿科 儿科 儿科
- 肥胖问题研究研究
背景情况:
- 肥胖的恶性循环模型强调了海马在食物奖励处理中的作用.
- 关于儿童肥胖如何影响海马信息交换及其对BMI和饮食行为的预测能力的研究有限.
研究的目的:
- 调查超重/肥胖儿童海马功能和有效连接 (EC) 的变化.
- 确定这些神经变化是否预测未来的体重指数 (BMI) 和饮食行为.
主要方法:
- 对39名超重儿童和51名正常体重儿童 (8-12岁) 的长度研究.
- 休息状态功能磁共振成像 (fMRI) 和光谱动态因果建模 (spDCM) 来分析海马连接.
- 线性支向量的回归以评估海马连接对未来的BMI和饮食行为的预测价值.
主要成果:
- 超重的儿童表现出右海马和左后中心 (PoCG) 之间异常的双向抑制作用.
- 具体来说,观察到较强的抑制性海马体→PoCG EC和较弱的抑制性 PoCG→海马体 EC.
- 这些海马-皮质连接性改变预测了未来的BMI和食物接近行为.
结论:
- 异常的海马-体感皮层信息交换在儿科肥胖症中至关重要.
- 这些发现为儿童肥胖和食欲调节的神经机制提供了新的见解.
- 该研究通过澄清关键电路中的定向影响来扩展成人肥胖的spDCM模型.
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