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関連する概念動画

Lateralization01:28

Lateralization

1.1K
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
1.1K
Cerebral Hemispheres01:05

Cerebral Hemispheres

2.5K
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
2.5K
Language and Cognition01:27

Language and Cognition

829
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
829
Higher Mental Functions of the Brain: Language01:10

Higher Mental Functions of the Brain: Language

3.9K
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
3.9K
Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

5.0K
Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...
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関連する実験動画

Updated: Feb 17, 2026

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD
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白質の構造は,半球言語の横行化に関連しているのでしょうか? システマティック・レビュー

Ieva Andrulyte1, Eszter Demirkan2, Francesca M Branzi2

  • 1Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool L7 8TX, UK.

Brain communications
|February 16, 2026
PubMed
まとめ

このレビューでは,拡散MRIを用いた機能的な言語の横向化における白質を調査します. 発見は,弓状筋のような経路を言語の優位性と結びつけていますが,特に健康な個体では,結果は異なります.

キーワード:
拡散MRIによるMRIです.言語の裏側化 (lateralization) についてシステマティック・レビュートラクトグラフィ トラクトグラフィ トラクトグラフィ トラクトグラフィホワイトマターの非対称性

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Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice
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A Standardized Pipeline for Examining Human Cerebellar Grey Matter Morphometry using Structural Magnetic Resonance Imaging
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関連する実験動画

Last Updated: Feb 17, 2026

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD
07:44

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD

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Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice
07:03

Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice

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A Standardized Pipeline for Examining Human Cerebellar Grey Matter Morphometry using Structural Magnetic Resonance Imaging
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科学分野:

  • 神経画像は,神経イメージングによるものです.
  • 神経科学は神経科学である.
  • ホワイトマター研究 ホワイトマター研究

背景:

  • 機能的な言語の横行化は複雑である.
  • 拡散MRIは,白質の役割についての洞察を提供します.
  • 言語の優位性に関連した白質の理解は極めて重要です.

研究 の 目的:

  • 白い物質と機能的な言語の優位性に関する拡散MRI研究を体系的にレビューする.
  • 言語の横向化に関連した白質の領域に関する発見を合成する.
  • 課題を特定し,将来の研究方向性を提案する.

主な方法:

  • Web of Science,Scopus,およびOvid MEDLINEの体系的な文献検索を行いました.
  • 成人を対象とした25件の研究 (,腫瘍,健康な対照群) を含む.
  • 拡散MRIメトリックの分析と言語横行化との関連.

主要な成果:

  • 弓状筋筋と筋は,臨床グループで言語の横行化とよく関連しています.
  • 健康な個体での発見は,ハンドネスによって影響を受け,変数です.
  • 側頭葉の領域は,前頭部領域よりも強い拡散MRI相関を示しています.

結論:

  • 言語の横行化における白質の役割は複雑で,人口に依存しています.
  • 方法論的な矛盾は,研究間の比較を妨げています.
  • 将来の研究には,より大きなサンプル,全脳アプローチ,標準化された方法が必要です.