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相关概念视频

Autonomic Nervous System01:22

Autonomic Nervous System

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The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
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The human nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and spinal cord, while the PNS contains nerve cells, clusters of nerve cells, and the sensory receptors that are outside the CNS. The PNS has two types of nerve cells: sensory (afferent) and motor (efferent). Sensory cells send signals to the CNS from receptors, and motor cells carry signals from the CNS to organs, muscles, and...
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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...
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The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
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Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
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Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
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相关实验视频

Updated: Jul 17, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
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静止状态默认模式网络与明智的建议有关.

Chao S Hu1,2, Yanbin Zheng3,4, Guang-Heng Dong5,6,7

  • 1Department of Medical Humanities, School of Humanities, Southeast University, Nanjing, People's Republic of China. chao.super.hu@gmail.com.

Scientific reports
|August 30, 2023
PubMed
概括

默认模式网络 (DMN) 在从个人角度建议他人时支持智慧. 休息状态的DMN活动,特别是在ACC中,与以更大的元认知谦卑给予建议有关.

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科学领域:

  • 神经科学是一个神经科学.
  • 心理学 心理学 心理学
  • 认知科学 认知科学

背景情况:

  • 默认模式网络 (DMN) 涉及到自我参考思维和对个人经验的反思.
  • 智慧,以成熟的理解和元认知为特征,可能涉及自我参考处理.
  • 在智慧中,特别是在提供建议时,DMN的作用仍然未被充分探索.

研究的目的:

  • 调查默认模式网络 (DMN) 活动与咨询过程中的智慧之间的关联.
  • 检查视角采用 (第二人称与第三人称) 如何影响心理距离和DMN参与智慧.
  • 探索休息状态DMN活动,超认知谦卑和建议质量之间的关系.

主要方法:

  • 休息状态功能性MRI (fMRI) 用于测量DMN中低频波动 (ALFF) 的幅度.
  • 52名成年人从第二人称或第三人称的角度向年轻人提供了建议.
  • 评估了心理距离,并根据智慧标准评价了建议,包括元认知谦卑 (MH).

主要成果:

  • 从第二人称角度提供咨询,与第三人称角度相比,显著减少了心理距离.
  • 超认知谦卑 (MH) 仅在从第二人称角度进行建议时,在DMN区域 (右面ACC,左面dmPFC) 与ALFF相关.
  • 在第二人称条件下,右面的ACC与第三人称条件相比,在第二人称条件下显示出更强烈的MH关联.

结论:

  • 静止状态的DMN活动,特别是在右面ACC中,对于自我参与的智慧表现至关重要,例如给予建议.
  • 在提供建议时,利用第二人称的视角增强了DMN功能与元认知谦卑之间的联系.
  • 研究结果表明,DMN在利用个人经验提供明智的建议方面发挥着关键作用.