从电生理学记录中盲目识别状态转换和潜在的神经动力学
Addison L Schwamb1, Zongxi Yu1, ShiNung Ching1
1Electrical and Systems Engineering, Washington University in St. Louis, St. Louis, 63130, MO, USA.
Journal of neuroscience methods
|November 1, 2025
概括
我们开发了一种新的方法来建模不断变化的神经动态,并识别潜在的电路机制. 这种方法同时分析神经状态及其过渡,提供对大脑功能的见解.
科学领域:
- 计算神经科学是一种神经科学.
- 系统神经科学 系统神经科学
- 神经科学是一个神经科学.
背景情况:
- 神经动力学不是静态的,随生理状态而变化.
- 了解这些动态需要模拟状态变化和状态内电路机制.
研究的目的:
- 开发一种统一的,数据驱动的方法,在不同生理状态中建模神经动力学.
- 同时推断潜态过渡和每个状态内的生成电路机制.
主要方法:
- 一个参数网络模型,包含由隐藏马尔科夫模型 (HMM) 控制的依赖状态调制.
- 一个解决HMM参数化,神经动态和状态估计的三元优化框架.
- 估计理论构造的整合,以有效地盲目识别状态转换和动态.
主要成果:
- 准确推断潜态转换和特定状态动态的基准真相数据.
- 对脑电图 (EEG) 记录的成功应用,从标记状态转换中推断大脑动态的变化.
结论:
- 开发的方法使动态神经系统的盲目建模成为可能.
- 方便推断神经活动状态变化背后的调制电路机制.
相关概念视频
01:41Action Potentials
Overview
01:14Action Potential
Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
01:14Action Potential
Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
01:15Resting Potential Decay
The resting membrane potential of a neuron (-70mV) is sustained due to the selective ion permeability of the membrane. At the resting potential, the membrane is slightly permeable to ions like sodium (Na+) and chloride (Cl−) and highly permeable to potassium ions (K+). Differences in the ions' concentration inside the cell compared to the outside are maintained by membrane transport proteins like channels and pumps.
At rest, the K+ is the main ion that moves across the membrane through...
At rest, the K+ is the main ion that moves across the membrane through...