在神经反应中通过生成建模解脱信号和噪声
Kendrick Kay1, Jacob S Prince2, Thomas Gebhart3
1Center for Magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota.
bioRxiv : the preprint server for biology
|May 7, 2024
概括
这项研究介绍了信号和噪声 (GSN) 的生成建模,这是一种将神经响应信号与噪声分离的新方法. GSN 改进了信号估计,并增强了神经成像中主要组件分析等分析.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 数据分析 数据分析
背景情况:
- 对相同刺激的神经反应显示出显著的变化,称为噪声.
- 从噪音中区分神经信号对于理解大脑功能和避免误解至关重要.
- 当前的方法可能无法充分分离这些组件.
研究的目的:
- 引入一个原则化的建模方法,信号和噪声 (GSN) 的生成建模,用于区分神经信号和噪声.
- 通过明确建模信号和噪声分布来改善信号分布的估计.
- 为了证明GSN在神经成像数据分析中的实用性.
主要方法:
- 开发了信号和噪声 (GSN) 的生成建模,将神经反应建模为信号和噪声分布的总和.
- 通过从数据分布中减去估计的噪声分布来估计信号分布.
- 使用模拟验证GSN并将其应用于功能磁共振成像 (fMRI) 数据.
主要成果:
- 在不改进个别事件响应估计的情况下,GSN准确地估计了信号分布.
- 在模拟中,GSN与相关方法相比表现良好.
- 对fMRI数据的应用表明GSN否定了主要组件分析,并改善了维度估计.
结论:
- 在神经反应中,GSN提供了一种强大的方法来解开信号和噪声.
- 这种方法可以增强各种分析,包括主要组件分析和噪声上限估计.
- 对于研究大脑功能和可变性的神经科学家来说,GSN提供了一个有价值的工具.
更多相关视频
11:14A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants
Published on: October 4, 2015
10.9K
08:51Statistical Modelling of Cortical Connectivity Using Non-invasive Electroencephalograms
Published on: November 1, 2019
5.6K
相关概念视频
Neural Regulation
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
Neural Circuits
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
