在行为状态中,前额叶子区域对主要视觉皮层的反具有不同的作用
Sofie Ährlund-Richter1, Yuma Osako1, Kyle R Jenks1
1The Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Neuron
|November 26, 2025
概括
哺乳动物前额叶皮层 (PFC) 通过反投影调节感官处理. 独特的PFC子区域,前带皮层 (ACA) 和轨道前皮层 (ORB),独特地影响视觉皮层的活动和行为.
科学领域:
- 神经科学是一个神经科学.
- 系统神经科学 系统神经科学
- 计算神经科学是一种神经科学.
背景情况:
- 哺乳动物前额叶皮层 (PFC) 通过远程反连接来调节感官处理.
- 特定的PFC子区域,包括前带状皮质 (ACA) 和腹侧轨道前皮质 (ORB),具有独特的连接模式.
- 这些独特的模式表明在调节感官信息方面有专门的角色.
研究的目的:
- 研究ACA和ORB投影如何影响初级视觉皮层 (VISp) 的视觉处理.
- 阐明ACA和ORB反在感官调制中的不同功能作用.
主要方法:
- 在小鼠中进行轴突追踪以绘制投影路径.
- 两光子成像用于监测神经活动.
- 化学遗传操纵来控制神经元活动.
主要成果:
- 与ORB预测相比,ACA预测带有更多的视觉刺激信息.
- 无论是ACA还是ORB,都传达了非视觉,行为相关的信息.
- ACA输入改善了VISp神经元中的视觉编码,并与兴奋相关.
- ORB输入调节了行为,但损害了高对比度视觉编码.
结论:
- ACA和ORB投影在视觉皮层的反调制中起着不同的作用.
- 这些发现支持PFC反机制的模块化组织.
- 来自PFC子区域的差异反根据行为背景微调感官处理.
相关概念视频
Motor and Sensory Areas of the Cortex
6.8K
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 cortex....
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 cortex....
6.8K
Association Areas of the Cortex
8.7K
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,...
8.7K
Somatosensory, Motor, and Association Cortex
2.2K
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...
2.2K
Vision
59.2K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
59.2K
Lobes of the Cerebrum
4.0K
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....
4.0K
Role of Cerebellum and Prefrontal Cortex in Memory
988
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...
988


