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相关概念视频

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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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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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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相关实验视频

Updated: May 22, 2025

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping
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衰老在语音理解过程中调节大规模的神经网络交互.

Anna Uta Rysop1, Kathleen Anne Williams2, Lea-Maria Schmitt3

  • 1Department of Neurology, University Medicine Greifswald, Greifswald, Germany; Research Group Cognition and Plasticity, Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstrasse 1a, Leipzig 04103, Germany.

Neurobiology of aging
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概括

老年人在噪音中的语音理解过程中显示出大脑网络相互作用的改变,尽管在一般网络中活动增加,但连接性降低. 这影响了语义上语境如何帮助整个生命周期的倾听.

关键词:
衰老的衰老 衰老的衰老域名 - 一般的域名.功能连接性的功能连接性.功能性网络是指功能性网络.语义可预测性 语义可预测性在噪音中的言语.

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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 心理学 心理学 心理学

背景情况:

  • 噪音中的语音理解具有挑战性,因为它依赖于通过特定领域网络的语义上下文 (可预测性收益).
  • 当上下文受到限制时,认知控制和域一般网络支持倾听.
  • 之前的研究通常集中在年轻,健康的听众身上,不清楚网络互动的寿命变化.

研究的目的:

  • 在年轻和老年人之间在噪音中的语音理解过程中调查功能网络交互.
  • 检查不同的语义可预测性如何影响这些网络交互.
  • 在整个生命周期中澄清域特定 (语义) 和域一般网络之间的相互作用.

主要方法:

  • 使用了相关性心理生理相互作用 (cPPI) 分析.
  • 在噪音条件下理解句子时研究了功能网络连接.
  • 与健康的年轻人和老年听众进行了比较,听力可预测程度各不相同.

主要成果:

  • 与年轻成年人相比,老年人在域一般网络中表现出更多与任务相关的活动.
  • 老年人与年轻人相比,网络之间的连接性有所减少.
  • 更高的可预测性与语义和注意网络之间的更强的正合,以及与控制网络的负合相关.

结论:

  • 语音理解的可预测性收益涉及语义网络和域-通用网络之间的复杂相互作用.
  • 神经活动和连接性的与年龄相关的差异可能反映了补偿机制或神经脱差.
  • 这些发现有助于理解听觉处理和认知控制网络的与年龄相关的变化.