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相关概念视频

Language and Cognition01:27

Language and Cognition

293
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.
293
Cognitive Development During Adulthood01:30

Cognitive Development During Adulthood

29
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,...
29
Factors Affecting Activity Coefficient01:17

Factors Affecting Activity Coefficient

678
The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size. 
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...
678
High-Level and Low-Level Awareness01:19

High-Level and Low-Level Awareness

226
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
226
Lateralization01:28

Lateralization

268
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
268
Information Processing Approach01:30

Information Processing Approach

19
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...
19

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相关实验视频

Updated: May 13, 2025

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
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认知功能与日常身体活动模式之间的方向性.

Francesca R Marino1,2,3, Jennifer A Deal2,4, Alden L Gross2,3

  • 1Department of Anatomy & Neurobiology Boston University Chobanian & Avedisian School of Medicine Boston Massachusetts USA.

Alzheimer's & dementia (New York, N. Y.)
|April 14, 2025
PubMed
概括
此摘要是机器生成的。

更多的体力活动和减少久坐时间与老年人的认知衰退速度较慢有关. 基线认知功能没有预测身体活动模式的变化.

关键词:
加速测量仪加速测量仪认知能力下降 认知能力下降痴呆症 痴呆症是一种痴呆症.身体活动 身体活动预防 预防 预防

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科学领域:

  • 老年学是一门学科.
  • 神经科学是一个神经科学.
  • 公共卫生 公共卫生

背景情况:

  • 身体活动是痴呆症的一个关键可修改的风险因素.
  • 认知功能影响参与体育活动.
  • 老年人身体活动和认知之间的双向关系需要进一步研究.

研究的目的:

  • 评估日常身体活动与认知功能之间的关联的方向性.
  • 检查认知功能的变化与随着时间的推移身体活动模式的变化是如何相关的.
  • 调查体育活动对老年人认知能力下降的影响.

主要方法:

  • 利用巴尔的摩长度老龄化研究 (BLSA) 中237名认知完整的老年人的数据.
  • 通过两次访问 (平均1.8年间隔) 通过手腕加速度计测量认知因素得分 (全球认知,记忆,语言,执行功能/注意力,视觉空间处理) 和身体活动.
  • 采用双变量潜变得分模型来评估关联的方向性,调整共变量.

主要成果:

  • 较高的基线体育活动水平,较长的运动时间和较少的静坐时间与多个领域的年度认知衰退减少有关.
  • 相反,基线认知功能得分没有预测体育活动模式的后续变化.
  • 活动碎片化也与认知能力下降相反相关.

结论:

  • 增加身体运动和减少久坐行为与潜在的认知衰退相关.
  • 向减少久坐时间和增加活动持续时间可能是减缓老年人认知衰退的有效策略.
  • 促进日常运动和减少久坐行为可能会带来认知效益,并可能减轻痴呆症风险.