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相关概念视频

Organization of the Brain01:30

Organization of the Brain

751
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...
751
Transformers in Distribution System01:27

Transformers in Distribution System

99
Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
99
Types Of Transformers01:16

Types Of Transformers

961
Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...
961
Functional Brain Systems: Reticular Formation01:13

Functional Brain Systems: Reticular Formation

1.8K
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...
1.8K
Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

98
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
98
Functional Brain Systems: Limbic System01:15

Functional Brain Systems: Limbic System

2.5K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
2.5K

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相关实验视频

Updated: Jun 19, 2025

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms
08:36

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

Published on: March 21, 2019

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揭示连续的大脑动态组织与多模式图形变压器.

Chongyue Zhao1, Liang Zhan1, Paul M Thompson2

  • 1Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, USA.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
|July 25, 2024
PubMed
概括

这项研究引入了一种新的时空图形转换器模型来分析大脑动态. 它有效地整合了结构和功能连接,揭示了对大脑活动模式的洞察力.

关键词:
图形对比表示表示的图形对比表示.多模式图形变压器神经图微分方程 神经图微分方程

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

Published on: October 13, 2023

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
17:06

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

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相关实验视频

Last Updated: Jun 19, 2025

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms
08:36

Dynamic Inter-subject Functional Connectivity Reveals Moment-to-Moment Brain Network Configurations Driven by Continuous or Communication Paradigms

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Modeling the Functional Network for Spatial Navigation in the Human Brain
05:55

Modeling the Functional Network for Spatial Navigation in the Human Brain

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

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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.
  • 数据科学数据科学数据科学

背景情况:

  • 大脑的大规模动态受结构连接 (SC) 的影响.
  • 现有的多式联络方法往往简化了空间或时间大脑数据,错过了复杂的动态.
  • 了解时空动态如何适应异质的SC至关重要.

研究的目的:

  • 提出一种新的时空图形转换器模型,用于整合结构和功能大脑连接.
  • 通过考虑空间和时间领域来捕捉复杂的时空动态.
  • 提高对结构-功能相互作用及其与行为关系的理解.

主要方法:

  • 开发了一个时空图形变压器模型,集成多模式大脑数据 (fMRI,MRI,MEG).
  • 采用对比式学习和多头注意力来实现异质节点和图表表示.
  • 集成的T1-to-T2加权 (T1w/T2w) 成像以映射异质性并增强结构-功能合适性.

主要成果:

  • 该模型成功地突出了大脑大规模时空动态的局部特性.
  • 证明了捕捉功能连接和行为表现之间的依赖强度的能力.
  • 通过使用异质性图表,展示了改进的模型适合结构-功能相互作用.

结论:

  • 拟议的方法可以更全面地解释不同模式的复杂大脑动态.
  • 这种方法推进了多模式大脑数据的分析,同时尊重空间和时间的复杂性.
  • 为研究大脑结构,功能和行为之间的关系提供了一个新的框架.