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関連する概念動画

Concepts and Prototypes01:24

Concepts and Prototypes

592
The human nervous system handles vast amounts of information by translating sensory stimuli into neural impulses, which the brain processes, creating thoughts expressed through language or stored as memories. The brain also synthesizes information from emotions and memories, which significantly influence thoughts and behaviors. This intricate process creates a comprehensive mental picture.
The brain organizes this information using concepts, which are mental categories grouping linguistic data,...
592
Higher Mental Functions of the Brain: Language01:10

Higher Mental Functions of the Brain: Language

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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
Storage01:23

Storage

440
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
440
Language and Cognition01:27

Language and Cognition

881
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.
881
Natural and Artificial Concepts01:24

Natural and Artificial Concepts

619
In psychology, concepts can be divided into two categories: natural and artificial. Natural concepts are formed through direct or indirect experiences. For example, consider the concept of snow. If you live in a place with regular snowfall, such as Essex Junction, Vermont, you know snow through direct experiences. You’ve seen it fall, touched it, shoveled it, and played in it. You recognize its texture, appearance, and even its smell. In contrast, if you live on an island like Saint...
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Organization of the Brain01:30

Organization of the Brain

2.9K
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...
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関連する実験動画

Updated: Feb 28, 2026

Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
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大規模言語モデルを用いた脳における概念および関係意味表現のマッピング

Paul C Bogdan1, Cortney M Howard1, Roberto Cabeza1

  • 1Department of Psychology and Neuroscience, Duke University, Durham, NC 27708, USA.

Current biology : CB
|February 26, 2026
PubMed
まとめ

本研究は、脳が意味情報をどのように整理するかを明らかにし、概念とその関係が処理される場所をマッピングします。頭頂葉皮質、前頭前野皮質、大脳基底核などの特定の脳領域は、関係情報のエンコーディングに不可欠です。

キーワード:
関連性fMRI大規模言語モデル表現意味論

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Author Spotlight: Advancing Large-Scale Neural Dynamics Through HD-MEA Technology

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関連する実験動画

Last Updated: Feb 28, 2026

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科学分野:

  • 認知神経科学
  • 計算神経科学
  • 神経画像法

背景:

  • 脳における意味情報組織の理解は、重要な課題です。
  • 以前の研究は概念表現に焦点を当てており、関係表現の場所は不明瞭なままでした。

研究 の 目的:

  • 概念情報から独立して、関係意味情報が脳のどこに表現されるかを調査すること。
  • 意味関係の神経表現と推論の行動測定値を結びつけること。

主な方法:

  • テキストから関係埋め込みを抽出するために大規模言語モデルを利用しました。
  • 行動データ(n=636)および機能的磁気共鳴画像法(fMRI)データ(n=60)を収集しました。
  • 抽出された埋め込みを使用して、fMRIデータに表現類似性分析を適用しました。

主要な成果:

  • 大規模言語モデルの埋め込みは、独立した概念および関係情報を捉えました。
  • 後頭葉および下側頭葉は、主に孤立した概念を表します。
  • 頭頂葉構造は、概念と関係の両方を表します。
  • 背外側前頭前野および大脳基底核は、概念表現を最小限に抑え、堅牢な関係表現を示しました。
  • 関係表現の強度は、推論能力と相関していました。

結論:

  • 本研究は、脳における概念とその関係の神経表現をマッピングします。
  • 概念のみ、概念と関係、および関係のみの処理のための異なる脳領域を特定しました。
  • 意味関係の神経エンコーディングと行動推論との間の関連を示しました。