在微小的皮层网络中稀有编码和高阶相关性
Ifije E Ohiorhenuan1, Ferenc Mechler, Keith P Purpura
1Department of Neurology and Neuroscience, Weill Cornell Medical College, New York, New York 10065, USA. ifo2001@med.cornell.edu
Nature
|July 6, 2010
概括
皮层神经元表现出规模依赖的相关性. 局部神经元集群表现出复杂的,刺激驱动的活动模式,不同于通过更简单的相互作用连接的遥远神经元.
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.
- 系统神经科学 系统神经科学
背景情况:
- 皮层连接是跨多个尺度组织的.
- 尺度依赖的相关活动对感官皮层功能和刺激编码至关重要.
研究的目的:
- 分析皮层相互作用的依赖规模结构.
- 在主要视觉皮层中,以局部和更大的距离来表征神经元发射模式.
主要方法:
- 使用的最大模型.
- 分析了麻醉的猿 (Macaca mulatta) 的多四旋翼录音.
- 在局部集群 (<300微米) 和远处神经元 (600-2,500微米) 中比较了激发模式.
主要成果:
- 集群内部的局部发射模式显示了高阶相关性,与对对相互作用可预测的较大距离不同.
- 这些局部相关性是灵活的,并通过视觉输入快速重组.
- 局部相关性减少了传递的信息,但创造了较少的代码,增加了静止和集中活动周期.
结论:
- 神经元相关性表现出层次组织.
- 配对相关性将神经元连接到更大的尺度上 (迷你列).
- 局部子网络 (少数小列) 呈现出复杂的,动态重组的连接性,由刺激调节.
相关概念视频
Neural Circuits
3.0K
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...
3.0K
Association Areas of the Cortex
10.2K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
10.2K
Somatosensory, Motor, and Association Cortex
5.1K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
5.1K


