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相关概念视频

Storage01:23

Storage

324
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...
324
Working Memory01:24

Working Memory

767
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
767
Impact of Schemas01:30

Impact of Schemas

182
Schemas are cognitive structures that provide a framework for interpreting and organizing social information. They help individuals navigate complex environments by offering expectations about people, events, and behaviors. Schemas influence attention, encoding, and retrieval processes, thereby shaping the entire trajectory of information processing in social contexts.Attention and Cognitive LoadDuring initial attention, schemas function as filters that prioritize schema-consistent information,...
182
Language and Cognition01:27

Language and Cognition

681
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.
681
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

1.3K
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
1.3K
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

967
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
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相关实验视频

Updated: Jan 7, 2026

A Semantic Priming Event-related Potential ERP Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder
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A Semantic Priming Event-related Potential ERP Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder

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语义记忆搜索的基于代理模型:解开认知控制和语义空间组织.

Diego Morales1, Sergio E Chaigneau2, Enrique Canessa1

  • 1Faculty of Engineering and Science, Universidad Adolfo Ibáñez.

Cognitive science
|December 24, 2025
PubMed
概括

人类语义记忆检索涉及适应性搜索策略,而不仅仅是随机或固定的过程. 区域限制搜索 (ARS) 模型更好地解释了人类在各种语义结构中的语言流模式.

科学领域:

  • 认知科学 认知科学
  • 计算神经科学是一种神经科学.
  • 心理学 心理学 心理学

背景情况:

  • 语言流利任务显示语义聚类和切换.
  • 现有的模型往往忽视了搜索策略和语义记忆结构之间的相互作用.
  • 战略与随机搜索模型的优越性仍在争论中.

研究的目的:

  • 开发和验证一种新的基于代理的区域限制搜索 (ARS) 模型,用于语义记忆检索.
  • 在不同的语义结构下比较ARS与Lévy Walk (LW) 和Random Walk (RW) 模型.
  • 研究不同搜索机制如何与语义组织相互作用.

主要方法:

  • 开发了一个基于ARS代理的模型,具有增量决策和本地信息使用.
  • 系统地改变语义结构参数 (集群,密度,分散).
  • 评估了对50名参与者的模型性能,使用聚类,切换和时间指标.

主要成果:

  • 在适度集群的语义结构中,ARS表现出色.
  • 在稀疏结构中LW表现最好,在密集结构中RW表现最好,但RW偏离了人类数据.
  • 当语义密度受到限制时,ARS在各种配置中展示了类似人类的性能,而不是LW和RW.
关键词:
基于代理的模型基于代理的模型.记忆模型 记忆模型语义流利任务任务的语义流利.语义记忆是一种语义记忆.语言流性的任务任务

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Examining Online Syntactic Processing of Spoken Complex Sentences in Chinese Using Dual-Modal Interference Tasks
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A Semantic Priming Event-related Potential ERP Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder

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The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
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The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

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Examining Online Syntactic Processing of Spoken Complex Sentences in Chinese Using Dual-Modal Interference Tasks
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结论:

  • 类似人类的语义记忆检索需要动态的,自适应的搜索策略.
  • 没有一个单一的随机过程 (LW,RW) 可以普遍解释所有语义结构的检索.
  • 区域限制搜索 (ARS) 模型提供了一个更灵活和更类似于人类的语义记忆检索.