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相关概念视频

Vision01:24

Vision

53.2K
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.
53.2K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

3.8K
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....
3.8K
Visual System01:26

Visual System

579
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
579

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相关实验视频

Updated: Jun 28, 2025

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
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Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex

Published on: February 8, 2020

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鼠标初级视觉皮层中的模块横向网络.

Andreas Burkhalter1, Weiqing Ji1, Andrew M Meier1,2

  • 1Department of Neuroscience, Washington University School of Medicine, St. Louis, MO, United States.

Frontiers in neuroanatomy
|April 23, 2024
PubMed
概括
此摘要是机器生成的。

鼠标初级视觉皮层 (V1) 中的局部水平连接与层1 (L1) 中的反输入相互作用. 这些相互作用,特别是在M2间补丁中,塑造了视觉对运动的处理.

关键词:
M2 肌肉酸乙胆受体聚合在一起的顶端树突.集群输入是指集群的输入.水平连接 水平连接 水平连接层1 一层1层这里是鼠标鼠标鼠标鼠标鼠标鼠标.补丁 补丁 补丁 补丁主要视觉皮层的主要视觉皮层.

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Visualization of Cortical Modules in Flattened Mammalian Cortices
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Visualization of Cortical Modules in Flattened Mammalian Cortices

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Using Looming Visual Stimuli to Evaluate Mouse Vision
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Using Looming Visual Stimuli to Evaluate Mouse Vision

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相关实验视频

Last Updated: Jun 28, 2025

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
08:42

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex

Published on: February 8, 2020

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Visualization of Cortical Modules in Flattened Mammalian Cortices
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Visualization of Cortical Modules in Flattened Mammalian Cortices

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科学领域:

  • 神经科学是一个神经科学.
  • 视觉皮层研究 视觉皮层研究
  • 计算神经科学是一种神经科学.

背景情况:

  • 来自较高皮层区域的反连接和初级视觉皮层 (V1) 中的局部水平连接对于上下文处理至关重要.
  • V1的1层 (L1) 将反和局部输入集成到投射神经元树突上,将外部刺激与内部信息联系起来.

研究的目的:

  • 研究小鼠初级视觉皮层 (V1) 1层内的反和局部水平连接的重叠和相互作用.
  • 阐明这些相互作用在处理与物体和自我运动相关的视觉信息中的作用.

主要方法:

  • 利用前向和逆向病毒追踪器在小鼠V1.1内绘制局部水平连接的地图.
  • 描述了长距离水平连接的分布和终结模式,识别了M2肌酸乙胆受体阴性 (M2-) 间补丁.
  • 研究了这些连接与L1中的L2/3和L5投射神经元的尖端树突的重叠.

主要成果:

  • 确定了两种类型的局部水平连接:短的,特定于图像点的连接,和长的,延伸到接收场周围的不齐连接.
  • 长的水平连接最好以M2间接点结束.
  • 来自反网络的重叠输入 (LP丘脑,中间脊流) 和局部水平连接在M2间接点与顶端树突中观察到,形成模块选择性循环.

结论:

  • 初级视觉皮层 (V1) 的第1层 (L1) 包含了不同的M2间补丁,本地和反输入汇合在一起.
  • 这些M2间补丁促进了地形上遥远的视觉表示之间的相互作用,表明在整合上下文信息方面发挥了作用.
  • 这些发现表明,M2间距之间的相互作用对于处理与物体和自动运动相关的视觉输入至关重要.