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相关概念视频

Psychological Responses to Stress01:20

Psychological Responses to Stress

54
Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
54
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

104
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
104
Traumatic Memory01:20

Traumatic Memory

88
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
88
Stress and Mental Health01:30

Stress and Mental Health

119
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
119
Physiological Foundation of Stress01:24

Physiological Foundation of Stress

56
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.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
56
Types of Stressors01:23

Types of Stressors

144
A stressor is any event, condition, or stimulus that triggers stress and causes a physical or psychological response in the body. Stressors can be categorized into three main types: catastrophes; significant life changes; and daily hassles, including social stress. Each can be detrimental to physical and mental well-being.
Catastrophes
Catastrophes refer to large-scale, unpredictable events that create overwhelming stress and a sense of threat. Examples include natural disasters like...
144

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相关实验视频

Updated: Jun 27, 2025

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
07:59

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory

Published on: June 14, 2019

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急性压力对统计学学习和情节性记忆的影响.

Brynn E Sherman1, Isabella Huang2, Elaine G Wijaya2

  • 1University of Pennsylvania, Philadelphia, PA.

Journal of cognitive neuroscience
|May 7, 2024
PubMed
概括

急性压力可能会增强海马体的统计学学习,而不会影响情节性记忆. 压力后的皮质醇水平预测了以后的统计学学习保留.

科学领域:

  • 神经科学是一个神经科学.
  • 认知心理学 认知心理学
  • 压力研究 压力研究

背景情况:

  • 众所周知,压力会通过影响海马体功能来损害情节性记忆.
  • 海马体还通过不同的神经通路在统计学学习中发挥作用.
  • 动物研究表明,压力对这些海马路径有不同的影响.

研究的目的:

  • 研究急性压力对人类情节性记忆和统计学学习的影响.
  • 为了确定压力是否增强或损害海马体内的统计学习.
  • 检查压力,皮质醇水平和学习成果之间的关系.

主要方法:

  • 人类参与者暴露于急性压力 (社会评估的冷压力) 或对照条件.
  • 一个学习任务涉及观看具有可预测的类别序列的独特场景.
  • 24小时后对记忆进行了评估,以评估编码和学习效应.

主要成果:

  • 在学习前15分钟处置的急性压力显示了统计学学习的增强.
  • 较高的压力诱导的皮质醇水平与更好的统计学习记忆相关.
  • 在各种压力条件下,情节性记忆的表现没有显著差异.
  • 压力似乎有利于统计学上可预测的信息,并减少学习类型之间的竞争.

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Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm
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Restraint to Induce Stress in Mice and Rats
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相关实验视频

Last Updated: Jun 27, 2025

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
07:59

Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory

Published on: June 14, 2019

8.0K
Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm
07:26

Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm

Published on: May 4, 2020

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Restraint to Induce Stress in Mice and Rats
03:48

Restraint to Induce Stress in Mice and Rats

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结论:

  • 急性压力可能差异调节海马的学习过程,增强统计学习.
  • 与学习相比,应激暴露的时间对其影响至关重要.
  • 研究结果表明,压力会影响大脑如何优先考虑不同类型的信息编码.