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相关概念视频

Language01:16

Language

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Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.
Corballis and Suddendorf (2007) and Tomasello and Rakoczy (2003) highlight the role of language in...
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Overview
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Resting Membrane Potential01:24

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The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
The Inside of a Neuron is More Negative
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Antipsychotic Drugs: Typical and Atypical Agents01:21

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Antipsychotic drugs are classified into first-generation (typical) drugs including phenothiazines; and second-generation (atypical) drugs. Chlorpromazine hydrochloride (Thorazine), a phenothiazine derivative, broadly impacts the central, autonomic, and endocrine systems. This drug, along with typical agents like haloperidol (Haldol), primarily works by antagonizing D2 receptors, thus reducing dopaminergic neurotransmission. However, typical antipsychotics can cause side effects such as sedation...
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Components of Language01:24

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Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
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Language Development01:22

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Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
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相关实验视频

Updated: Jan 29, 2026

Involving Individuals with Developmental Language Disorder and Their Parents/Carers in Research Priority Setting
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患有发育性语言障碍的儿童的非典型休息状态和任务唤起的EEG签名

Aimin Liang1,2, Zhijun Cui2, Yang Shi2

  • 1School of Instrumentation Science and Optoelectronic Engineering, Beihang University, Beijing 100191, China.

Bioengineering (Basel, Switzerland)
|January 28, 2026
PubMed
概括

这项研究揭示了发育性语言障碍 (DLD) 的儿童与在休息和认知任务期间通常发育的儿童之间大脑活动的电生理学差异. 这些发现表明DLD具有神经生理学特征,有助于未来生物标志物开发.

关键词:
发展性语言障碍 (DLD)电脑电图 (EEG) 是一种电脑电图.与事件相关的潜力 (ERP)神经生物标志物的神经生物标志物静止状态网络是一个静止状态网络.

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科学领域:

  • 神经科学是一个神经科学.
  • 发展心理学 发展心理学
  • 语音语言病理学 语音语言病理学

背景情况:

  • 发育性语言障碍 (DLD) 与非典型的大脑网络功能有关,但直接的电生理学证据将内在和基于任务的神经活动连接起来很少.
  • 了解这些多层次的大脑异常对于识别生物标志物和开发针对DLD的有针对性的干预措施至关重要.

研究的目的:

  • 研究DLD儿童和典型发育 (TD) 儿童的多级电脑电图 (EEG) 标记物.
  • 探索两组之间休息状态大脑网络和任务唤起的神经反应的差异.
  • 评估整合这些EEG标记器用于DLD分类的潜力.

主要方法:

  • 检查了休息状态EEG,语义匹配任务响应和21名TD儿童和15名DLD儿童的听觉奇怪任务响应.
  • 分析了特定频率的连接性,微态动态,与事件相关的潜力 (ERP) 和与事件相关的脱同步 (ERD).
  • 使用机器学习框架集成多层次的EEG特征用于DLD分类.

主要成果:

  • 患有DLD的儿童表现出改变的静止状态连接性,降低的微状态稳定性和非典型的微状态过渡.
  • DLD组显示尾P1/N2反应减弱,在语义匹配期间缺乏特定的差异波.
  • 在听觉奇怪任务中,DLD儿童表现出明显的正面/α脱同步.
  • 整合休息状态和任务特征的机器学习模型实现了中度的分类准确性 (F1 = 70.3-80.0%),但显示出有限的概括性.

结论:

  • 支持DLD的翻译神经生理学特征,将内在网络组织与新兴的神经计算联系起来.
  • 在DLD中不典型的内在大脑组织可能会在认知任务期间限制神经处理.
  • 结果为开发DLD生物标志物和告知干预策略提供了基础,尽管样本规模较小的局限性.