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相关概念视频

Visual Agnosia01:12

Visual Agnosia

236
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
236
Prosopagnosia01:24

Prosopagnosia

207
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...
207
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

6.1K
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,...
6.1K
Accessory Structures of the Eye01:17

Accessory Structures of the Eye

1.6K
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
1.6K
Autism Spectrum Disorder01:19

Autism Spectrum Disorder

160
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
160
Visual System01:26

Visual System

616
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
616

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相关实验视频

Updated: Jul 19, 2025

A Method to Quantify Visual Information Processing in Children Using Eye Tracking
09:47

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

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患有朱伯特综合征的儿童的视觉功能

Federica Morelli1,2, Federico Toni1, Elena Saligari2

  • 1Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy.

Developmental medicine and child neurology
|August 18, 2023
PubMed
概括
此摘要是机器生成的。

患有朱伯特综合征的儿童往往会出现视力障碍,包括眼部运动失调和视网膜问题. 这些视力缺陷与发育迟缓和智力障碍有关,这强调了早期视力评估的必要性.

科学领域:

  • 眼科医生 眼科 眼科
  • 儿科 儿科 儿科
  • 遗传学 是一个遗传学.

更多相关视频

Electroretinogram Recording for Infants and Children under Anesthesia to Achieve Optimal Dark Adaptation and International Standards
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Electroretinogram Recording for Infants and Children under Anesthesia to Achieve Optimal Dark Adaptation and International Standards

Published on: September 3, 2020

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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

Published on: July 21, 2020

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相关实验视频

Last Updated: Jul 19, 2025

A Method to Quantify Visual Information Processing in Children Using Eye Tracking
09:47

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

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Electroretinogram Recording for Infants and Children under Anesthesia to Achieve Optimal Dark Adaptation and International Standards
08:38

Electroretinogram Recording for Infants and Children under Anesthesia to Achieve Optimal Dark Adaptation and International Standards

Published on: September 3, 2020

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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
07:45

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

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背景情况:

  • 朱伯特综合征是一种罕见的遗传疾病,影响大脑发育,经常导致各种神经和视觉障碍.
  • 了解朱伯特综合征视觉功能障碍的谱系对于早期诊断和管理至关重要.

结论:

  • 对患有朱伯特综合征的儿童来说,早期和多学科的视觉功能评估至关重要.
  • 需要个性化康复策略来支持功能视力,并解决视力障碍对认知发展的影响.
  • 需要进一步的研究来阐明伯特综合征中生物因素和全球功能之间的关系.