一种多目标优化方法,用于脑自我调节系统的线性建模
Felipe-Andrés Bello-Robles1, Manuel Villalobos-Cid2, Max Chacón2
1Biomedical Engineering, Engineering Faculty, Universidad de Santiago de Chile, Address One, Santiago, 917022, Chile.
Bio Systems
|May 16, 2024
概括
一种新的多目标优化方法改进了动态大脑自我调节 (dCA) 的模型. 这种方法更好地识别了受损的dCA,特别是高头,揭示了肌源性机制的作用.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
- 生理学 生理学 生理学
背景情况:
- 动态大脑自调节 (dCA) 维持稳定的大脑血流 (CF),尽管动脉血压 (ABP) 的变化.
- 评估dCA的现有方法在准确区分正常状态和受损状态方面面临挑战.
- 模拟脑血管阻力和遵从性对于理解dCA至关重要.
研究的目的:
- 引入一种新的多目标优化 (MO) 方法来配置脑血管阻力-合规模型.
- 通过自发的ABP和CF波动来增强正常和受损dCA之间的区别.
- 研究MO在不同生理条件下的dCA建模中的实用性.
主要方法:
- 在normocapnic和hypercapnic (5%CO2) 条件下收集了29个受试者的数据.
- 开发了脑血管阻力和血管合规模型,输入为ABP,输出为CF速度.
- 采用了MO方法来适应模型,优化了皮尔森的相关性和错误.
主要成果:
- 与单一目标 (SO) 方法相比,MO方法产生了优越的模型配置.
- 这种改善在超的条件下尤其显著.
- 巴雷托-最佳前线为dCA提供了新的见解,突出了肌源性机制对损伤的增加贡献.
结论:
- MO方法提供了一个更有效的方法来建模dCA.
- 这种技术增强了对dCA受损的理解,特别是在高头症期间.
- 这些发现强调了肌源性机制在dCA调节和损伤中的重要作用.
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