早期多发性硬化症中的视觉认知表现:视觉处理的多系统模型
Hariklia Vagias1, Michelle L Byrne1, Lyn Millist2
1School of Psychological Sciences and the Turner Institute for Brain and Mental Health, Monash University, Melbourne 3800, Australia.
Journal of clinical medicine
|February 10, 2024
概括
早期多发性硬化症 (MS) 涉及明显的视觉处理缺陷,这些缺陷会以不同的方式影响认知. 识别这些视觉认知表型对于更好地管理MS患者的症状至关重要.
科学领域:
- 神经科学是一个神经科学.
- 眼科医生 眼科 眼科
- 认知科学 认知科学
背景情况:
- 认知障碍在早期多发性硬化症 (MS) 中很常见,但异质,使诊断和管理复杂化.
- 视觉处理障碍在早期MS中也很普遍,并可能影响认知测试的表现.
- 当前的MS认知研究往往忽视了早期认知变化和视觉处理缺陷之间的联系.
研究的目的:
- 研究早期MS的认知和视觉处理之间的关系.
- 通过视觉处理的三系统模型 (异感,中央认知,异眼运动) 识别不同的视觉认知表型.
主要方法:
- 患有临床隔离综合症和复发性复发性多发性硬化症的患者接受了全面的神经眼睛,眼睛运动和神经心理评估.
- 探索性因子分析用于检查眼动变量的结构.
- 潜在的个人资料分析确定了不同的视觉认知表型.
主要成果:
- 确定了三个眼动结构:认知控制,认知处理速度和基本视觉处理.
- 出现了四种视觉认知表型:早期视觉变化,情感认知,认知控制和情感处理速度.
- 与其他类型相比,异性认知和认知控制类型的表现在符号数字模式测试中表现较差,除了异性认知组的年龄之外,表型之间没有显著的人口差异.
结论:
- 在早期多发性硬化中,明显的视觉处理缺陷可能会以标准神经心理测试无法检测的方式对认知产生差异性影响.
- 这些发现凸显了早期多发性硬化症患者视觉和认知功能综合评估的必要性.
- 进一步的研究可以改善早期症状识别和MS的干预策略.
相关概念视频
01:26Visual System
582
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...
Once through the pupil, the light passes through the lens, a...
582
01:24Vision
53.3K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
53.3K
01:20Parallel Processing
151
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
151
01:24Prosopagnosia
167
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...
167
01:12Visual Agnosia
200
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...
200