在自由行动的老鼠中有效编码3D姿势
Bartul Mimica1, Benjamin A Dunn2, Tuce Tombaz2
1Kavli Institute for Systems Neuroscience, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway. bartul.mimica@ntnu.no whitlock@ntnu.no.
概括
在自由食的老鼠中研究了身体姿势的神经信号. 后壁皮层 (PPC) 和前部运动皮层 (M2) 使用有组织,高效的群体代码来表示姿势,PPC活动先于M2.
科学领域:
- 神经科学
- 发动机控制
- 计算神经科学
背景情况:
- 动物会根据不同的行为动态调整身体姿势.
- 人们对姿势控制的神经基础还不完全了解.
- 在运动和导航方面, 后面的头皮皮层 (PPC) 和前部的运动皮层 (M2) 是关键.
研究的目的:
- 研究自由移动动物中控制身体姿势的神经信号.
- 确定PPC和M2在表现和解码姿势中的作用.
- 探索这些大脑区域的姿势结构和编码策略.
主要方法:
- 三维追踪自由食的老鼠.
- 从PPC和M2同时进行电生理记录.
- 分析头部,部和背部的神经调节.
- 通过神经活动解码正在进行的行为.
主要成果:
- 对于头部,部和背部的姿势, PPC 和 M2 都表现出强烈的神经调整.
- 姿势表示在PPC和M2内以地形组织.
- 神经元主要代表较少的姿势,
- 在PPC中神经活动往往先于M2中的活动.
- 在PPC和M2中,人口代码在空间上有组织,并且在能源上高效.
结论:
- 在体位表现方面,PPC和M2起着至关重要的作用.
- 这些大脑区域使用空间有组织的,高效的群体代码来表示姿势.
- 神经动力学表明从PPC到M2的姿势信息的顺序处理.
相关概念视频
lncRNA - Long Non-coding RNAs
9.9K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
9.9K
lncRNA - Long Non-coding RNAs
3.7K
3.7K
Nursing Code of Ethics
4.5K
The Nursing Code of Ethics sets the ethical benchmark for the profession, and guides nurses in ethical analysis and decision making at the societal, organizational, and clinical levels. The code encompasses showing compassion and respect for the patient, their families, and communities in all circumstances while committing to providing patient-centered care. In addition, the code states that nurses must advocate for the patient by defending a cause or recommendation to protect their rights,...
4.5K
Production Efficiency
18.3K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
18.3K
Trophic Efficiency
25.2K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
25.2K
Efficiency of The Carnot Cycle
3.7K
The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
3.7K


