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相关概念视频

Lateralization01:28

Lateralization

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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.
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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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Cerebral Hemispheres01:05

Cerebral Hemispheres

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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...
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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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Lobes of the Cerebrum01:22

Lobes of the Cerebrum

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The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
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Association Areas of the Cortex01:21

Association Areas of the Cortex

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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相关实验视频

Updated: Jan 12, 2026

Transcranial Direct Current Stimulation tDCS of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition
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单词选择,具体性和大脑侧面化

Jiayi Zhao1, Yuting Zhao2, Xuanci Zheng3

  • 1School of Psychology, Research Center for Exercise and Brain Science, Shanghai University of Sport, 650 Qingyuan Ring Road, Yangpu District, Shanghai, China.

Brain and language
|November 6, 2025
PubMed
概括
此摘要是机器生成的。

这项研究揭示了中国读者的语义选择和竞争的独特大脑网络. 具体的单词激活记忆系统,而抽象的单词激活语言处理区域.

关键词:
具体性的具体性语义控制 语义控制一个词汇竞争的竞争.词的选择 词的选择

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Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology

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相关实验视频

Last Updated: Jan 12, 2026

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科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学
  • 语言学的语言学.

背景情况:

  • 语义控制对于上下文依赖的含义检索至关重要.
  • 之前的研究表明左额头和部参与.
  • 语义选择和竞争的分离,特别是在中文和单词类型中,是不清楚的.

研究的目的:

  • 解离语义选择和竞争的神经相关物.
  • 研究单词具体性对这些过程的影响.
  • 为了检查普通话华语发言者的大脑激活和连接.

主要方法:

  • 参数调制fMRI设计.
  • 使用普通话中文的语义三元任务.
  • 操纵暗示目标和暗示干扰器的语义相似性.
  • 检查激活模式和功能连接.

主要成果:

  • 语义选择参与了左侧控制网络.
  • 语义竞争激活了双边的上部额叶和岛屿皮层.
  • 具体的单词涉及感知/情节系统;抽象的单词涉及左 IFG/时间系统.
  • 连接性分析显示了任务和刺激特定的调节.

结论:

  • 语义选择和竞争在功能上是可分离的.
  • 这些过程是由词汇语义特征 (如具体性) 调节的.
  • 这些发现完善了对语义控制的神经认知架构的理解.