一个原则框架来评估大脑功能子电路的信息理论适应性
Duy Duong-Tran1,2, Nghi Nguyen3, Shizhuo Mu1
1Department of Biostatistics, Epidemiology, and Informatics (DBEI), Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
概括
本研究引入了一种使用随机块模型 (SBMs) 来评估大脑连接学中的功能网络 (FNs) 的新框架. 它验证了诸如值等常见做法,确保更好地分析功能连接组 (FC).
科学领域:
- 系统和网络神经科学系统和网络神经科学
- 计算神经科学是一种神经科学.
- 神经成像分析分析 神经成像分析
背景情况:
- 大脑连接组分析的常见实践,如绘制功能网络 (FN) 和值功能连接组 (FC),往往缺乏严格的信息理论证明.
- 预定义的网络分区和选择的值对于分析单个FC的适当性仍未得到充分研究.
研究的目的:
- 正式定义和量化预先确定的功能网络 (FN) 的信息理论适应性,当它们被映射到单个功能连接组 (FC) 上时.
- 开发一个框架,以优化FC颗粒度,FN分区和值策略的选择,以保持人类大脑连接体的拓特征.
- 评估连接学分析中常见实践的信息理论有效性.
主要方法:
- 利用近期随机块模型 (SBM) 的理论进展来量化FC上的FN分区的信息理论适应性 (突出性).
- 将框架应用于人类连接组项目数据,使用多个细分级别的Schaefer分片.
- 评估各种组合的FC细粒度,FN分区和值策略.
主要成果:
- 开发的框架正式评估了在不同fMRI任务条件下将FN映射到单个FC的信息理论适当性.
- 证明0.25的共同值是对集团平均FC理论上有效的信息,解决了之前缺乏理由的问题.
- 确定了FC颗粒度,FN分区和值的最佳选择,以保持关键的拓特征.
结论:
- 该研究提供了一种严格的信息理论方法,以验证和优化大脑连接组分析的实践,包括使用功能网络和值方法.
- 结果支持FN和值的正确应用,为未来的研究提供了基础,特别是在开发个性化地块方面.
- 该框架可用于评估和优化连接组分析选择,以更好地保护大脑网络拓.
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