大脑网络中的因果相互作用预测三角神经疼痛的疼痛水平
Yun Liang1, Qing Zhao1, John K Neubert2
1J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States.
Brain research bulletin
|April 13, 2024
概括
研究人员使用fMRI确定了五种因果性脑网络相互作用,与三角神经疼痛 (TN) 疼痛严重程度有关. 这些发现为TN病理生理学和潜在的治疗点提供了新的见解.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 疼痛研究 疼痛研究
背景情况:
- 三神经疼痛 (TN) 是一种严重的面部疼痛状况.
- 大脑成像研究显示TN患者的结构和功能异常.
- 以前的研究探讨了大脑网络异常,但没有与疼痛水平相关的因果相互作用.
研究的目的:
- 研究TN患者大脑网络中的因果相互作用.
- 为了将这些因果相互作用与TN疼痛的严重程度相关联.
- 探索新的分析方法,以了解TN病理生理学.
主要方法:
- 功能性磁共振成像 (fMRI) 数据从39名TN患者在休息和疼痛跟踪会议期间收集.
- 格兰杰因果关系分析应用于fMRI数据,以确定跨会话一致的因果相互作用.
- 线性多重回归用于基于确定的因果相互作用来建模疼痛水平.
主要成果:
- 确定了五种一致的因果相互作用:thalamus → dACC,Caudate → 下环,前中心环 → 下环,超边缘环 → 下环,和Bankssts → 下环.
- 使用这些相互作用的回归模型解释了大约36%的疼痛水平差异.
- 该模型展示了交叉验证,预测了不同扫描会话中的疼痛水平.
结论:
- 应用于神经成像数据的新型分析方法揭示了TN中关键的因果大脑网络相互作用.
- 这些发现为三角神经疼痛的病理生理学提供了重要的见解.
- 鉴定到的相互作用可以为TN治疗的创新疗法的开发提供信息.
相关概念视频
01:20Pain
475
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
475
01:44Nociception
27.9K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
27.9K
01:29Blood and Nerve Supply to the Bones
11.0K
Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
11.0K