与食物相关的情绪变化对大脑血液动力学反应的影响
Yoko Hasegawa1, Tatsuya Suzuki2, Syogo Yoshimura1
1Division of Comprehensive Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Japan.
Appetite
|December 12, 2025
概括
大脑是大脑的大脑.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
背景情况:
- 了解食物偏好的神经基础对于解决饮食行为至关重要.
- 情绪价值显著影响食物选择和消费.
- 之前的研究已经探讨了食物偏好,但仅限于对不同的神经基质进行积极与负面价值的有限关注.
研究的目的:
- 研究食物的情感价值如何调节皮质血液动力学反应.
- 通过比较摄入有味道和无味的食物期间的大脑活动来确定食物偏好的神经基础.
- 为了确定不同的神经基质是否编码了情感价值的定性方向.
主要方法:
- 功能性近红外光谱学 (fNIRS) 用于测量食物摄入过程中前两侧区域的血液动力学变化.
- 参与者使用视觉模拟尺度 (VAS) 评价了个别选择的美味和不美味食物的情感价值.
- 数据处理涉及空间过和一般线性建模来分析皮质活动,特别是氧化血红蛋白信号.
主要成果:
- 左背侧前额皮层 (DLPFC) 显示出与两种食物类型的情绪价值强度相关的显著激活.
- 前额叶皮层的不同亚区域被美味与不美味的食物所吸引.
- 研究结果表明,情绪价值的方向 (正/负) 是由特定的神经基质编码的,而不仅仅是响应强度.
结论:
- 背侧前额皮层 (DLPFC) 在调解食物偏好和相关情绪方面发挥着关键作用.
- 独特的神经通路区分了积极和消极食物价值的处理.
- 这些见解有助于理解与食物有关的情绪的神经机制,并可能为不适应的饮食行为提供干预信息.
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