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相关概念视频

Concepts and Prototypes01:24

Concepts and Prototypes

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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,...
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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...
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Storage01:23

Storage

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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...
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Language and Cognition01:27

Language and Cognition

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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.
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Natural and Artificial Concepts01:24

Natural and Artificial Concepts

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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

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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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相关实验视频

Updated: Feb 28, 2026

Augmenting Large Language Models via Vector Embeddings to Improve Domain-Specific Responsiveness
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使用大型语言模型在大脑中绘制概念和关系语义表示.

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
概括

这项研究揭示了大脑如何组织语义信息,绘制概念及其关系的处理位置. 特定的大脑区域,包括头顶皮质,前额皮质和基底,对于编码关系信息至关重要.

关键词:
协会 协会 协会 协会功能磁力共振成像 (fMRI) 是一种大型语言模型.代表性 代表性的代表性语义学的语义学

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相关实验视频

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科学领域:

  • 认知神经科学 认知神经科学
  • 计算神经科学是一种神经科学.
  • 神经成像是一种神经成像.

背景情况:

  • 了解大脑中的语义信息组织是一个关键的挑战.
  • 以前的研究集中在概念表示上,不清楚关系表示的位置.

研究的目的:

  • 调查关系语义信息在大脑中代表的位置,独立于概念信息.
  • 将语义关系的神经表示与推理的行为指标联系起来.

主要方法:

  • 使用大型语言模型从文本中提取关系嵌入.
  • 收集行为数据 (n=636) 和功能磁共振成像 (fMRI) 数据 (n=60).
  • 应用代表性相似性分析到使用提取嵌入的fMRI数据.

主要成果:

  • 大型语言模型嵌入式捕获了独立的概念和关系信息.
  • 尾和下叶主要代表孤立的概念.
  • 关系结构代表着概念和关系.
  • 背侧前额皮质和基底带显示出强大的关系表征与最小的概念表征.
  • 关系表达的强度与推理能力相关联.

结论:

  • 该研究绘制了概念的神经表征及其在大脑中的关系.
  • 确定了用于仅概念,概念与关系和仅关系处理的独特的大脑区域.
  • 证明了语义关系的神经编码与行为推理之间的联系.