临床表现 临床表现
Hae Young H Yi1, Bronte Ficek-Tani1,2, Corey Horien1,3
1Yale School of Medicine, New Haven, CT, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
在阿尔茨海默病 (AD) 中的眼动模式可能为认知功能提供了洞察力. 非amnestic的AD患者表现出与视觉空间技能相关的不同固定时间,这取决于图像类型,这表明在临床评估中可能会使用眼睛跟踪.
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:
- 眼动异常是阿尔茨海默病 (AD) 的早期指标.
- 与对照组相比,视觉搜索任务揭示了阿兹海默症患者的反应时间较慢和固定模式的改变.
- 眼睛跟踪范式为评估认知障碍提供了有价值的工具,特别是在无法完成传统神经心理测试的患者中.
研究的目的:
- 研究阿尔茨海默病中眼动指标和视觉空间功能之间的关系.
- 要确定刺激类别 (情感面孔与中性场景) 是否影响这些关系.
- 探索眼睛跟踪对评估AD认知障碍的有用性.
主要方法:
- 在中性场景和情感面孔的自由观看期间收集的扫描器内眼睛跟踪数据 (停留时间,固定时间,跳动幅度).
- 在扫描仪之外进行的神经心理测试,评估视觉空间功能和一般认知 (例如,WAIS-III块设计,JLO,HVOT,MMSE).
- 使用ANOVA和线性回归来比较健康对照组 (HC),记忆障碍患者和非记忆障碍患者之间的眼睛跟踪和认知表现.
主要成果:
- 非amnestic AD参与者比amnestic AD和HC组显著表现出较差的视觉空间功能.
- 在眼睛跟踪指标或与认知表现的一般关系中没有观察到整体群体差异.
- 在非amnestic AD中,固定持续时间与面部与场景的视觉空间分数有不同的相关性 (面部试验中对JLO/Block Design负,场景试验中呈阳性).
结论:
- 没有记忆障碍的AD参与者在基于刺激类型 (面孔与场景) 的固定时间和视觉空间表现之间显示出明显的关联.
- 增强的情感面部采样可能有利于非记忆障碍AD的视觉空间任务执行.
- 眼动指标可以为解释AD神经心理测试结果提供有价值的补充信息,强调其临床相关性.
相关概念视频
01:24Chronic Kidney Disease II: Clinical Manifestations
520
Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
520
01:30Coronary Artery Disease III: Clinical Manifestations
299
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
299
01:25Endocarditis II: Clinical Features of Infective Endocarditis
364
Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
364
01:26Heart Failure III: Clinical Manifestations
436
Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
436
01:29Gastroesophageal Reflux Disease II: Clinical Features and Management
652
Gastroesophageal reflux disease, or GERD, is a persistent medical condition that affects many individuals worldwide. Its clinical manifestations can vary greatly, making diagnosis and management challenging for healthcare professionals. The following is a comprehensive overview of the clinical manifestations, assessment, and management strategies for GERD.
Clinical Manifestations
GERD presents itself in a multitude of ways, with symptoms varying from person to person. The hallmark symptoms are...
Clinical Manifestations
GERD presents itself in a multitude of ways, with symptoms varying from person to person. The hallmark symptoms are...
652
01:30Hypertension III: Clinical Manifestations and Diagnostic Studies
437
Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
437