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相关概念视频

Organization of the Brain01:30

Organization of the Brain

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...
Anatomy of the Brain: Major Regions01:20

Anatomy of the Brain: Major Regions

The brain is the most complex organ in the human body. It consists of four main parts: the cerebrum, diencephalon, cerebellum, and brainstem.
The cerebrum is the largest section of the brain and divides into left and right hemispheres, separated by a deep fissure. The cerebral outer layer of grey matter — the cerebral cortex — comprises elevations called gyri and shallow groves called sulci. The inner portion of white matter includes long nerve fibers known as axons, which connect various areas...
Cerebrum: Anatomical Overview I01:26

Cerebrum: Anatomical Overview I

The main and largest component of the human brain is the cerebrum. The cerebrum consists of two main parts: the cerebral cortex, an outer layer with wrinkles or folds known as gyri and shallow grooves called sulci, and a deeper region beneath it. The cerebrum divides into two distinct hemispheres and contains five different lobes: the frontal, parietal, temporal, occipital, and insula. The central sulcus separates the frontal and parietal lobes and two functionally important gyri — the...
Functional Brain Systems: Reticular Formation01:13

Functional Brain Systems: Reticular Formation

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...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
Anatomy of the Brain: Ventricles01:18

Anatomy of the Brain: Ventricles

There are hollow fluid-filled cavities known as ventricles deep inside the human brain. There are two lateral ventricles, one in each cerebral hemisphere, and each has three different projections — the anterior, inferior, and posterior horns visible from the lateral side. A thin membrane called the septum pellucidum separates the two lateral ventricles. The slender third ventricle in the diencephalon is connected to each lateral ventricle via a channel called the interventricular foramen. The...

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相关实验视频

Updated: May 16, 2026

Microdissection of Mouse Brain into Functionally and Anatomically Different Regions
08:06

Microdissection of Mouse Brain into Functionally and Anatomically Different Regions

Published on: February 15, 2021

功能大脑的大型模型.

Chris Eliasmith1, Terrence C Stewart, Xuan Choo

  • 1Centre for Theoretical Neuroscience, University of Waterloo, Waterloo, ON N2J 3G1, Canada. celiasmith@uwaterloo.ca

Science (New York, N.Y.)
|December 1, 2012
PubMed
概括
此摘要是机器生成的。

我们开发了Spaun,一个拥有250万个神经元的大脑模型,将复杂的大脑活动与各种动物行为联系起来. 这个模型成功地弥合了神经过程和可观察到的各种任务中的行为之间的差距.

更多相关视频

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

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

Recording and Analyzing Multimodal Large-Scale Neuronal Ensemble Dynamics on CMOS-Integrated High-Density Microelectrode Array
09:44

Recording and Analyzing Multimodal Large-Scale Neuronal Ensemble Dynamics on CMOS-Integrated High-Density Microelectrode Array

Published on: March 8, 2024

相关实验视频

Last Updated: May 16, 2026

Microdissection of Mouse Brain into Functionally and Anatomically Different Regions
08:06

Microdissection of Mouse Brain into Functionally and Anatomically Different Regions

Published on: February 15, 2021

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

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

Recording and Analyzing Multimodal Large-Scale Neuronal Ensemble Dynamics on CMOS-Integrated High-Density Microelectrode Array
09:44

Recording and Analyzing Multimodal Large-Scale Neuronal Ensemble Dynamics on CMOS-Integrated High-Density Microelectrode Array

Published on: March 8, 2024

科学领域:

  • 认知神经科学 认知神经科学
  • 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:

  • 将复杂的大脑活动与动物行为联系起来仍然是神经科学的核心挑战.
  • 现有的大规模神经模型还没有完全弥合神经活动和生物功能之间的差距.

研究的目的:

  • 提出一种新的,大规模的神经模型 (Spaun),能够弥合大脑活动和行为之间的差距.
  • 为了证明模型在对视觉刺激的反应中表现出多样化的行为能力.

主要方法:

  • 开发了一种250万神经元的计算模型,命名为"Spaun".
  • 该模型将视觉图像序列作为输入处理.
  • 一个物理模拟的手臂用于生成所有模型响应,模拟电机输出.

主要成果:

  • 斯帕恩模型成功地弥合了神经活动和生物功能之间的差距.
  • 该模型在八个不同的任务中表现出各种各样的行为.
  • Spaun捕捉了神经解剖学,神经生理学和心理行为的关键方面.

结论:

  • 斯帕恩模型在将神经复杂性与行为输出联系起来方面取得了重大进展.
  • 这个模型为理解整合大脑活动如何产生多样化的行为提供了一个框架.
  • 进一步的研究可以建立在Spaun的基础上,探索更复杂的认知功能和神经机制.