海马休息状态连接性与帕金森病的后皮层认知障碍有关
Dana Pourzinal1, Jihyun Yang1, Katie L McMahon2
1Faculty of Medicine, The University of Queensland Centre for Clinical Research, Herston, Australia.
Brain and behavior
|March 12, 2024
概括
大脑中的连接能力减弱.
科学领域:
- 神经科学是一个神经科学.
- 认知神经学 认知神经学
- 神经成像是一种神经成像.
背景情况:
- 帕金森病 (PD) 呈现出不同的认知亚型,包括前和后皮层,后者迅速向痴呆症发展.
- 鉴定后皮层亚型的生物标志物对于预测和潜在地减轻认知衰退至关重要.
研究的目的:
- 调查休息状态功能磁共振成像 (rs-fMRI) 标记与帕金森病的后皮层认知亚型相关.
- 探索PD认知亚型和健康对照之间的大脑连接的差异.
主要方法:
- 基-平均集群分析确定了四种PD认知亚型:认知完整,正面,后皮层和全球受损.
- 休息状态的fMRI对42名PD参与者和20名健康对照 (HC) 进行.
- 基于种子的分析比较了后皮层,认知完整的PD和HC组的海马连接,控制年龄. 进行了与认知测试的探索性相关性.
主要成果:
- 后皮层亚型与认知完整组相比,左海马和右前状皮层之间的连接显著较弱 (p-FDR = .01).
- 与HC相比,在后皮层亚型中观察到双边海马和状区域之间的连接性较弱.
- 在探索性分析中,海马-形连接性和类别流性之间发现了最强的关联.
结论:
- 降低海马-形连接是帕金森病后皮层认知缺陷的潜在独特生物标志物.
- 对海马体和状环的功能完整性的进一步研究可能有助于识别和跟踪PD的认知衰退.
更多相关视频
08:43Application of Granger Causality Analysis of the Directed Functional Connection in Alzheimer's Disease and Mild Cognitive Impairment
Published on: August 7, 2017
7.9K
07:26Characterizing the Relationship Between Eye Movement Parameters and Cognitive Functions in Non-demented Parkinson's Disease Patients with Eye Tracking
Published on: September 26, 2019
7.8K
相关概念视频
01:19Role of Hippocampus in Memory
248
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
248
01:21Association Areas of the Cortex
5.3K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
5.3K
01:14Role of Cerebellum and Prefrontal Cortex in Memory
430
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
430