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関連する概念動画

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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関連する実験動画

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

機能する脳の大規模モデル.

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
まとめ
この要約は機械生成です。

私たちは,複雑な脳活動と多様な動物の行動とを結びつけるため,250万個のニューロンを持つ脳モデル"Spaun"を開発しました. このモデルは,様々なタスクにおける神経プロセスと観察可能な行動の間のギャップをうまく埋めています.

さらに関連する動画

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

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

関連する実験動画

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

科学分野:

  • 認知神経科学とは
  • システム神経科学 システム神経科学
  • 計算神経科学とは

背景:

  • 複雑な脳活動と動物の行動を関連付けることは,神経科学における中心的な課題です.
  • 既存の大規模なニューラルモデルでは,ニューラル活動と生物学的機能の間のギャップを完全に埋めることができませんでした.

研究 の 目的:

  • 脳活動と行動の間のギャップを埋めることができる新しい,大規模の神経モデル (Spaun) を提示する.
  • 視覚的刺激に反応して多様な行動を示すモデルの能力を実証する.

主な方法:

  • "Spaun. "と名付けられた250万ニューロンの計算モデルの開発.
  • このモデルは,視覚的なイメージのシーケンスを入力として処理します.
  • 物理的にモデル化された腕は,すべてのモデル応答を生成するために使用され,モーター出力をシミュレートします.

主要な成果:

  • Spaunモデルは,神経活動と生物学的機能の間のギャップを橋渡しすることに成功しています.
  • このモデルは,8つの異なるタスクで幅広い行動を示しています.
  • Spaunは,神経解剖学,神経生理学,および心理的行動の重要な側面を捉えています.

結論:

  • スパーンモデルは,神経の複雑さを行動の出力と結びつける上で,重要な進歩を示しています.
  • このモデルは,統合された脳活動がどのように多様な行動を生み出すかを理解するための枠組みを提供します.
  • 更に研究が進められれば,より複雑な認知機能や神経メカニズムを調査するために,Spaunを活用できます.