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相关概念视频

Sleep-Wake Cycles01:24

Sleep-Wake Cycles

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Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
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Physiological Foundation of Stress01:24

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Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
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Adrenaline triggers the...
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Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

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Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
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Stress Prevention and Stress Management Techniques II01:23

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Personality types, particularly Type A and Type B, significantly influence how individuals respond to stress. These personality distinctions are marked by varying levels of ambition, competitiveness, and coping styles, all of which shape an individual's resilience to stressors.
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Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
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Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
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Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm
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睡眠/清醒的规律性会影响压力如何塑造执行功能.

Gabriel R Gilmore1, Anna L Smith2, Fallon B Dickinson1

  • 1Department of Psychology, University of Kentucky, Lexington, KY, United States.

Frontiers in sleep
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PubMed
概括

一致的睡眠时间表可能有助于在压力下保持认知抑制. 定期的睡眠/清醒模式与更好的应激反应有关,尽管高压力与定期的睡眠减缓了某些任务的反应时间.

关键词:
认知 认知 认知执行职能 执行职能是指执行职能.睡眠 睡眠 睡眠 睡眠 睡眠睡眠/觉醒的规律性压力就是压力,压力就是压力.

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科学领域:

  • 认知神经科学 认知神经科学
  • 睡眠科学 睡眠科学
  • 压力研究 压力研究

背景情况:

  • 执行功能对日常生活至关重要,已知睡眠和压力会对其产生影响.
  • 睡眠调节不良和心理压力都会损害执行功能,压力可能会加剧睡眠问题.
  • 最近压力和睡眠不足的增加凸显了需要了解它们对执行功能的综合影响的必要性.

研究的目的:

  • 调查日常睡眠模式,应激暴露和执行功能表现之间的关系.
  • 检查睡眠/觉醒规律和急性压力事件如何影响认知抑制,灵活性和工作记忆.

主要方法:

  • 这是一项为期21天的基于应用程序的远程研究,涉及227名参与者.
  • 每天进行三次睡眠和压力评估.
  • 执行功能被评估使用情绪Stroop任务,道制作测试A/B,和向后数字跨度.

主要成果:

  • 一致的睡眠/清醒时间表与较少报告的急性压力事件有关.
  • 在Stroop任务中,更高的睡眠/清醒规律与更快的对自我相关的负面刺激的反应相关.
  • 睡眠/清醒变化和急性压力之间的相互作用预测了情绪性Stroop表现,在那些有定期睡眠时间表的人中,增加的压力减缓了反应.

结论:

  • 睡眠/觉醒的规律性可能在面对累积的急性压力时,在保持适应性抑制控制方面发挥保护作用.
  • 虽然定期睡眠有助于应对压力,但高累积压力仍然会损害抑制控制,特别是对于特定的刺激类型.
  • 在这项研究中,工作记忆和认知灵活性等执行功能没有受到急性压力事件的数量或强度的影响.