大脑年龄作为捕捉老年人流体认知的生物标志物的实用性有限
1Department of Psychology, University of Otago, Dunedin, New Zealand.
eLife
|June 13, 2024
概括
大脑年龄,流体认知的生物标志物,显示有限的实用性. 机器学习模型从脑MRI预测年龄并不能显著改善超越单独时间年龄的流体认知预测.
科学领域:
- 神经成像是一种神经成像.
- 认知神经科学 认知神经科学
- 生物标志物发现发现
背景情况:
- 脑年龄,源自机器学习模型,从MRI预测时间年龄,是流体认知的候选生物标志物.
- 它在捕捉超越时间年龄的流体认知方面的实际实用性需要正式评估.
研究的目的:
- 评估大脑年龄作为流体认知的生物标志物的有效性.
- 调查年龄预测模型性能与Brain Age对流体认知的实用性之间的关系.
主要方法:
- 开发了26个大脑年龄预测模型,使用了来自"人类结合体老化项目" (n=504,年龄36-100岁) 的各种MRI模式.
- 采用共同性分析来确定大脑年龄和时间年龄对流体认知变异的独特贡献.
- 从脑MRI对流体认知的直接预测与使用Brain Age的预测进行了比较.
主要成果:
- 大脑年龄独特地解释了超越时间年龄的流体认知变异的仅为1.6%.
- 在预测时间年龄方面更高的准确性并不能保证更好的脑年龄用于流体认知.
- 更好的年龄预测模型导致大脑年龄与时间年龄 (29%的32%) 在解释流体认知方面明显重叠.
- 从脑MRI数据直接预测流体认知显示,与依赖大脑年龄的方法相比,解释变异的改善可能约为1/3 .
结论:
- 脑年龄作为流体认知的独立生物标志物具有有限的效用.
- 大脑年龄对流体认知的预测能力在很大程度上与时间年龄相混.
- 从神经成像数据直接建模流体认知,为捕捉与大脑相关的认知变异提供了更有前途的方法.
更多相关视频
相关概念视频
Cognitive Development During Adulthood
88
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,...
88
Alzheimer's Disease: Overview
462
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...
462
Cattell's Theory of Intelligence
6.4K
Raymond Cattell, along with John Horn, made significant contributions to our understanding of intelligence by distinguishing between two types: fluid intelligence and crystallized intelligence.
Fluid intelligence involves the capacity to solve new problems and adapt to unfamiliar situations. It's the type of intelligence individuals use when they encounter a novel problem or puzzle that requires innovative thinking. For instance, figuring out how to operate a new gadget relies heavily on...
Fluid intelligence involves the capacity to solve new problems and adapt to unfamiliar situations. It's the type of intelligence individuals use when they encounter a novel problem or puzzle that requires innovative thinking. For instance, figuring out how to operate a new gadget relies heavily on...
6.4K


