前额神经时间尺度的选择性控制由表皮层皮层
bioRxiv : the preprint server for biology
|February 3, 2025
概括
研究人员发现了两种不同时间尺度的额头眼场神经元类型. 关闭后壁皮质改变了这些时间尺度,影响了注意力,揭示了大脑区域如何沟通.
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.
背景情况:
- 内在的神经时间尺度反映了神经活动模式的持久性.
- 前视野 (FEF) 和后壁皮质 (PPC) 对于注意力和眼睛运动至关重要.
研究的目的:
- 为了研究内在神经时间尺度在FEF神经元中的作用.
- 检查PPC失活如何影响FEF神经时间尺度和注意力调制.
主要方法:
- 在体内测量FEF神经元的内在时间尺度.
- 失活了PPC,并观察到FEF神经元活动和时间尺度的变化.
主要成果:
- 确定了两个类型的FEF神经元:短时间尺度 (~25毫秒) 和长时间尺度 (~100毫秒).
- 在这两种神经元类型中,PPC失活增加了内在时间尺度,特别是短时间尺度的神经元.
- PPC无活化减少了注意力调制,特别是在长时间神经元中.
结论:
- 在FEF中的内在神经时间表与PPC的区域间通信有因果关系.
- 在FEF中,不同的网络模式支持不同的神经元动态和计算.
更多相关视频
09:48Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention
Published on: September 11, 2017
9.9K
10:35Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy
Published on: June 13, 2017
31.0K
相关概念视频
Role of Cerebellum and Prefrontal Cortex in Memory
345
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
345
Somatosensory, Motor, and Association Cortex
386
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...
386
Lobes of the Cerebrum
514
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
514
Parallel Processing
143
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
143
Motor and Sensory Areas of the Cortex
2.8K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor...
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor...
2.8K
