动态上下偏差实现了对个体运动的快速适应性变化.
Lucas Y Tian1, Timothy L Warren1, William H Mehaffey1
1Center for Integrative Neuroscience and Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, United States.
eLife
|September 21, 2023
概括
神经共同波动揭示了LMAN如何影响鸟歌学习期间的RA区域. 这种动态的上下控制支持运动适应和复杂的行为.
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.
- 行为神经科学 行为神经科学
背景情况:
- 复杂的行为依赖于大脑区域之间协调的神经活动.
- 神经协调的功能,特别是快速的共同波动,在支持行为方面还不太清楚.
- 假设自上而下的影响来指导运动学习和适应.
研究的目的:
- 为了调查快速的神经协同波动是否反映了大脑区域之间的时刻与任务相关的影响.
- 为了在鸟歌错误纠正适应的背景下测试这个假设.
- 为了确定前阴 (LMAN) 的侧面巨细胞核在运动学习过程中是否有动态影响 (RA) 的强健核.
主要方法:
- 在唱歌鸟中对联录制LMAN和RA活动.
- 分析神经协同波动,以确定自上而下的影响特征.
- 在特定的前运动时窗期间LMAN活动的扰乱.
- 在学习过程中对鸟类歌声音调修改的影响的评估.
主要成果:
- 对RA的上下LMAN影响的签名被确定为一个LMAN领先的共同波动.
- 这种协同波动在特定的前运动时窗内在学习过程中得到加强.
- 在这个窗口中,令人不安的LMAN活动迅速封闭了音调修改,表明局部的电机偏差信号.
- 动态的自上而下的影响在个体运动的时间尺度上有所不同,并且取决于环境.
结论:
- 区域间的神经协同波动可以表示对行为至关重要的动态上下影响.
- 在鸟适应过程中,LMAN在RA上施加了一个暂时局部化和环境灵活的电机偏差信号.
- 这项研究揭示了一个神经协调如何支持自适应运动学习的机制.
相关概念视频
01:25The Anchoring-and-Adjustment Heuristic
7.3K
In order to make good decisions, we use our knowledge and our reasoning. Often, this knowledge and reasoning is sound and solid. However, sometimes, we are swayed by biases or by others manipulating a situation. For example, let’s say you and three friends wanted to rent a house and had a combined target budget of $1,600. The realtor shows you only very run-down houses for $1,600 and then shows you a very nice house for $2,000. Might you ask each person to pay more in rent to get the...
7.3K
01:04Social Facilitation
32.0K
Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
32.0K
01:07Time-Domain Interpretation of PD Control
136
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
136