预测脑缩和认知衰老轨迹与基线主观认知问题在认知正常的老年人
Michelle You1, Cutter A Lindbergh1, Renaud La Joie1
1Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, CA, USA.
Neurobiology of aging
|August 29, 2024
概括
主观认知问题,即使没有客观缺陷,也预测老年人脑缩和认知衰退. 这些担忧标志着对不良大脑衰老轨迹的风险增加.
科学领域:
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
- 认知心理学 认知心理学
背景情况:
- 主观认知问题 (SCC) 在认知正常的老年人中很普遍.
- 记忆与非记忆SCC的临床意义需要进一步调查.
- 了解SCC对大脑结构和认知功能的影响对于衰老研究至关重要.
研究的目的:
- 为了研究基线记忆和非记忆SCC之间的关系,以及大脑体积的纵向变化.
- 检查SCC如何预测神经心理测试表现的变化随着时间的推移.
- 为了确定SCC是否是不良大脑和认知衰老的危险因素,在没有受损的老年人中.
主要方法:
- 对476名功能完整,客观无损的老年人 (平均年龄72岁) 的纵向研究.
- 混合效应模型分析了基线SCC (记忆和非记忆) 和大脑体积变化 (灰质,前额皮质,中部叶) 之间的关联.
- 神经心理测试的性能轨迹被评估与基线SCC相关.
主要成果:
- 更高的记忆和非记忆SCC预测了更大的总灰质和背侧前额皮层缩.
- 记忆SCC特别预测了加速的中间叶缩.
- 非记忆的SCC预测了处理速度的下降,而记忆的SCC没有预测神经心理的下降.
结论:
- 主观认知问题是加速脑缩的重要危险因素.
- SCC可以预测纵向认知衰退,特别是在处理速度方面.
- 即使在认知正常的个体中,SCC也表明对不良衰老过程的脆弱性增加.
更多相关视频
相关概念视频
Cognitive Development During Adulthood
72
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
72
Alzheimer's Disease: Overview
454
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
454


