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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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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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Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
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一个基于损伤意识的边缘图形神经网络,用于预测中风后失言症患者的语言能力.

Zijian Chen1, Maria Varkanitsa2, Prakash Ishwar1

  • 1Department of Electrical and Computer Engineering, Boston University.

Machine learning in clinical neuroimaging : 7th international workshop, MLCN 2024, held in conjunction with MICCAI 2024, Marrakesh, Morocco, October 10, 2024, proceedings. MLCN (Workshop) (7th : 2024 : Marrakesh, Morocco)
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一种名为LEGNet的新模型,利用休息状态fMRI (rs-fMRI) 的大脑连接来预测中风后失语患者的语言能力. 这种损伤感知图形神经网络显示了更好的准确性和概括性,以更好地评估失语症.

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阿法西亚预测的预测.数据增强数据增强功能连接性的功能连接性.图形神经网络是一个神经网络.损伤意识建模的建模

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科学领域:

  • 神经成像是一种神经成像.
  • 计算神经科学是一种神经科学.
  • 人工智能在医学中的应用

背景情况:

  • 脑卒中后失语严重影响了沟通和生活质量.
  • 休息状态功能磁共振成像 (rs-fMRI) 揭示了大脑功能连接模式.
  • 准确预测语言能力对于有效的康复策略至关重要.

研究的目的:

  • 开发和验证一种新的深度学习模型LEGNet,用于预测中风后失语患者的语言能力.
  • 研究整合病变信息与rs-fMRI连接的实用性,以提高预测准确度.
  • 评估模型的性能和对独立数据集的概括能力.

主要方法:

  • 开发一个损伤感知图形神经网络 (LEGNet),结合基于边缘的学习,损伤编码和子图形学习模块.
  • 模型预训练和超参数调整使用来自人类结合体项目 (HCP) 的合成数据.
  • 通过对内部中风后失语数据集的重复十倍交叉验证和对第二个独立数据集的测试进行评估.

主要成果:

  • 在预测语言能力方面,LEGNet显著超过了基线深度学习方法.
  • 该模型在使用不同的神经成像协议获得的数据集上展示了优异的概括性能.
  • 病变信息的整合提高了模型捕捉大脑语言关系的能力.

结论:

  • LEGNet有效地学习了RS-fMRI连接,脑损伤和语言能力之间的复杂关系.
  • 拟议的模型为客观和准确的中风后失言症评估提供了一个有希望的工具.
  • 这种方法有可能指导个性化康复策略并改善患者的治疗结果.