网络隔离与认知健康的老年人中的处理速度有关
Sara A Nolin1, Mary E Faulkner1, Paul Stewart1
1University of Alabama at Birmingham Heersink School of Medicine and Evelyn F. McKnight Brain Institute, Birmingham, United States.
eLife
|March 26, 2025
概括
大脑网络分离与健康老年人的认知功能有关. 在85岁及以上的个体中,差异化的功能网络支持成功的认知衰老和处理速度.
科学领域:
- 神经科学是一个神经科学.
- 认知衰老研究 认知衰老研究
- 大脑网络分析 脑网络分析
背景情况:
- 老化的大脑表现出功能连接的变化.
- 了解大脑组织如何支持健康衰老中的认知是至关重要的.
- 在极端老年时保持认知健康的老年人提供了成功衰老的见解.
研究的目的:
- 在认知健康的最老的成年人 (85+) 中调查功能网络隔离.
- 为了检查大脑网络组织与这一年龄段的认知表现之间的关联.
- 为健康的老年人提供皮质分片.
主要方法:
- 功能网络隔离分析对146名85岁以上的认知健康参与者进行.
- 数据来自麦克奈特大脑衰老注册表 (MBAR).
- 为85岁以上的年龄组开发了皮质分片.
主要成果:
- 在网络隔离和整体认知之间发现了显著的关联.
- 关联系统及其网络的分离 (前端-双端,环膜-眼膜,默认模式) 与处理速度相关.
- 最古老的大脑中的网络分离与认知表现密切相关.
结论:
- 差异化的功能性大脑网络与非常老年人保持认知能力有关.
- 网络隔离是成功认知衰老的关键因素.
- 这些发现凸显了大脑网络组织对于在晚年维持认知的重要性.
更多相关视频
相关概念视频
Cognitive Development During Adulthood
42
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,...
42
Parallel Processing
143
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
143
Stereotypes, Prejudice, and Discrimination
89.8K
Humans are very diverse and although we share many similarities, we also have many differences. The social groups we belong to help form our identities (Tajfel, 1974). These differences may be difficult for some people to reconcile, which may lead to prejudice toward people who are different. Prejudice is a negative attitude and feeling toward an individual based solely on one’s membership in a particular social group (Allport, 1954; Brown, 2010). Prejudice is common against people who...
89.8K
Chunking
43
Chunking is a powerful cognitive technique that improves short-term memory retention by organizing information into smaller, more manageable units. The brain, limited by working memory capacity, can more easily process and store information when it is divided into "chunks" rather than presented as discrete, unrelated elements. Chunking is especially useful when dealing with large amounts of information, such as numerical sequences, words, or complex ideas.
The principle behind chunking...
The principle behind chunking...
43
Language and Cognition
308
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
308
Information Processing Approach
27
The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
27


