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相关概念视频

Organization of the Brain01:30

Organization of the Brain

735
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
735
Vision01:24

Vision

53.0K
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.
53.0K
Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

427
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...
427
Lobes of the Cerebrum01:22

Lobes of the Cerebrum

571
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....
571
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

3.0K
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...
3.0K
Functional Brain Systems: Reticular Formation01:13

Functional Brain Systems: Reticular Formation

1.7K
The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
1.7K

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Conceptual priorities shape individual gaze patterns during naturalistic visual attention.

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相关实验视频

Updated: Jun 11, 2025

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging
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Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

Published on: December 12, 2012

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视网管类编码组织了内部和外部导向的大脑网络之间的相互作用.

Adam Steel1,2,3,4, Peter A Angeli3, Edward H Silson5

  • 1Beckman Institute, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.

bioRxiv : the preprint server for biology
|October 10, 2024
PubMed
概括

大脑是大脑的大脑.

更多相关视频

Modeling the Functional Network for Spatial Navigation in the Human Brain
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Modeling the Functional Network for Spatial Navigation in the Human Brain

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Microdissection of Mouse Brain into Functionally and Anatomically Different Regions
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Microdissection of Mouse Brain into Functionally and Anatomically Different Regions

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相关实验视频

Last Updated: Jun 11, 2025

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging
11:24

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

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Modeling the Functional Network for Spatial Navigation in the Human Brain
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Modeling the Functional Network for Spatial Navigation in the Human Brain

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Microdissection of Mouse Brain into Functionally and Anatomically Different Regions
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科学领域:

  • 神经科学是一个神经科学.
  • 认知神经科学 认知神经科学
  • 神经成像是一种神经成像.

背景情况:

  • 默认网络 (DN) 和背部注意网络 (dATN) 传统上被认为是内部和外部处理的对手.
  • 了解这些网络之间的整合对于理解大脑功能至关重要.
  • 以前的研究认为这些网络在很大程度上是分离的.

研究的目的:

  • 为了研究默认网络和静止的背部注意网络之间的voxel尺度相互作用.
  • 探索视网膜偏好如何影响内部和外部大脑网络之间的相互作用.
  • 为了确定这些网络是否真正独立或表现出协调活动.

主要方法:

  • 利用休息时参与者的高分辨率7T fMRI数据.
  • 定义的个性化全脑网络 (DN和dATN).
  • 在视觉任务期间,在这些网络中映射了这些网络中的单个voxels的视网膜偏好.

主要成果:

  • 尽管在静止状态下具有整体独立性,但潜伏的视网膜类代码揭示了DN和dATN之间的复杂的语音尺度相互作用.
  • 伏塞尔相互作用是由视网膜偏好构成的:相似的视野偏好导致抗相关活性.
  • 这种视网膜组织可以与特定域的网络偏好进行集成,从而实现并行处理.

结论:

  • 默认网络和背部注意网络在静止状态下不是独立的;它们在voxel层面上相互作用.
  • 沃克塞尔级互动通过BOLD响应保存和编码信息,即使没有外部刺激.
  • 视网管类编码可能是组织大脑范围通信和整合内部/外部处理的基本原则.