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解开整体感知处理和动作动态:利用fMRI探索神经和心理对食物线索的反应

Nastaran Malmir¹, Hamed Ekhtiari², Ali Farhoudian³

¹Department of Psychology, Islamic Azad University, Science and Research Branch, Tehran, Iran.

|August 7, 2025

概括

互感,大脑中的大脑.

科学领域:

神经科学是一个神经科学.
心理学心理学心理学
肥胖问题研究研究

背景情况:

内接,或感知身体信号,对于代谢平衡至关重要,并与肥胖有关.
岛内整体感知处理在肥胖风险中的作用,特别是它对运动皮层的影响,仍未得到充分研究.

研究的目的:

调查食物暗示处理中的神经和心理因素,重点关注基于insula的整体感知.
探索在食物提示暴露期间大脑活动,主观感觉和功能连接之间的关系.

主要方法:

功能性磁共振成像 (fMRI) 评估了45名健康成年人在食物暗示反应任务期间的血液氧化水平依赖 (BOLD) 反应.
对感兴趣区域的分析集中在岛屿上,并补充了整个大脑的声音智能相关性和功能连接性分析.
心理测量捕获了食欲感觉和欲望控制.

主要成果:

食物提示暴露显著增加了食欲感觉,并降低了欲望控制.
主观的食欲感觉与前中心回环 (运动皮质),内环,下额回环 (IFG),后带皮质 (PCC) 和上叶 (SPL) 的激活呈正相关.
在insula-PrG-IFG网络中观察到功能连接的改变,特别是IFG-PrG连接的减少.

结论:

岛内整体感受处理,运动皮层活动的增加和IFG抑制控制的减少有助于增强食欲状态,可能促进体重增加.
这些发现突出了食物暗示和食欲调节的背景下,整体感知,神经处理和心理反应之间的相互作用.

关键词:

线索反应性线索反应性岛屿岛屿 (英语:Insula) 是一个岛屿.间接接收录 (interoception) 是一种对接接收录.运动皮层的运动皮层.

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