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相关概念视频

Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Prosopagnosia01:24

Prosopagnosia

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...
Language and Cognition01:27

Language and Cognition

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.
Intellectual Disability01:29

Intellectual Disability

Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...
Learning Disabilities01:25

Learning Disabilities

Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
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Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

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相关实验视频

Updated: Jul 6, 2026

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
05:54

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Published on: October 18, 2018

发育性阅读障碍症是什么

Jean-François Démonet1, Margot J Taylor, Yves Chaix

  • 1INSERM U455, Hôpital Purpan, IFR 96, Toulouse, France. demonet@toulouse.inserm.fr

Lancet (London, England)
|May 4, 2004
PubMed
概括

发育性阅读障碍是一种特定的阅读障碍,具有生物学起源,通常涉及声学障碍. 神经成像揭示了障碍阅读症患者的大脑活动和连接能力的改变,这可以通过干预改善.

科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 是一个遗传学.
  • 发展心理学 发展心理学

背景情况:

  • 发育性阅读障碍,或特定的阅读障碍,影响具有正常智力和感官能力的儿童,表现为阅读缺陷.
  • 证据表明生物起源和声学障碍的流行,尽管表现和并发条件的显著变化.
  • 现有的理论探讨了阅读障碍的认知和神经基础.

研究的目的:

  • 总结目前对发展性阅读障碍的生物,遗传和神经方面的理解.
  • 突出关于阅读障碍症的遗传和神经成像研究的发现.
  • 讨论大脑活动对阅读干预的反应变化的影响.

主要方法:

  • 对基因研究的审查,确定与特定阅读障碍相关的位置.
  • 分析神经成像研究,检查患有阅读障碍的人的大脑活动和连接性.
  • 检查对治疗干预对大脑功能的影响的研究.

主要成果:

  • 遗传研究表明多个位点影响阅读障碍,但直接的症状与位点相关性仍然难以捉摸.
  • 神经成像显示,在患有阅读障碍的个体中,语言关键的大脑区域 (例如,左状环) 的活动和连接受损.
  • 在补救干预后观察到大脑活动的变化,这表明有改善的潜力.

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相关实验视频

Last Updated: Jul 6, 2026

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
05:54

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Published on: October 18, 2018

Assessing Dyslexia at Six Year of Age
15:00

Assessing Dyslexia at Six Year of Age

Published on: May 1, 2020

Advancing Dyslexia Assessment in Children Through Computerized Testing
09:00

Advancing Dyslexia Assessment in Children Through Computerized Testing

Published on: August 16, 2024

结论:

  • 发育性阅读障碍是一种生物学根源的疾病,具有显著的声学组成部分.
  • 神经学上的差异,包括大脑功能和连接能力的改变,是阅读障碍的特征.
  • 干预措施可以积极影响与阅读相关的脑活动模式,在患有阅读障碍的人群中.