临床表现 临床表现
Sophie Pellerin1,2, Simona Maria Brambati3,4
1University of Montreal, Montréal, QC, Canada.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
主观认知衰退 (SCD) 显示了微妙的连接语音 (CS) 变化,特别是在词汇和语义领域. 网络分析显示,SCD是健康衰老和轻度认知障碍 (MCI) 之间的中间阶段.
科学领域:
- 神经语言学是一种神经语言学.
- 认知神经科学 认知神经科学
- 计算语言学 计算语言学
背景情况:
- 轻度认知障碍 (MCI) 与广泛的连接语音 (CS) 变化有关.
- 在主观认知衰退 (SCD) 中,CS 概况及其与阿尔茨海默病 (AD) 进展的关系仍然不清楚.
- SCD可能代表了AD的早期阶段,而不是MCI.
研究的目的:
- 将SCD患者的CS特征及其关系与对照患者和MCI患者进行比较.
- 为了研究CS在AD连续的早期阶段的作用.
主要方法:
- 使用自然语言处理提取了30个CS特征 (流利性,词汇,语法).
- 通过使用ANCOVA对不同组 (对照组,SCD,MCI) 的CS特征进行比较.
- 使用高斯图形模型为每个组构建CS网络.
主要成果:
- 与对照组和MCI相比,SCD表现出增加的语音速率和较低的局部连贯性.
- 网络分析表明,与对照和MCI相比,SCD中的节点强度中心性发生了变化.
- 与其他组相比,SCD网络中的突出边缘显示增加,减少或中间权重.
结论:
- 在SCD中微妙的CS变化主要在词汇和语义领域.
- SCD代表了健康衰老和MCI之间的中间阶段.
- 网络分析为AD连续阶段早期的CS提供了更深入的见解.
相关概念视频
Chronic 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
Coronary 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
Endocarditis 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
Heart 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
Gastroesophageal 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
Hypertension 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


