强烈但碎片化的记忆,一个压力严重的事件
Anna-Maria Grob1, Denise Ehlers1, Lars Schwabe2
1Department of Cognitive Psychology, Institute of Psychology, Universität Hamburg, Hamburg 20146, Germany.
eNeuro
|August 28, 2023
概括
压力可以增强对单个事件的回忆,但会损害对事件顺序的记忆. 这表明压力会产生强烈的,但不太连接的记忆.
科学领域:
- 认知神经科学 认知神经科学
- 心理学 心理学 心理学
背景情况:
- 压力通常被认为可以生动地增强记忆.
- 然而,压力对不同记忆方面的影响,比如个人事件与它们的关联,尚未完全理解.
研究的目的:
- 为了调查急性压力是否可以增强记忆,对一个事件的单个元素进行调查.
- 确定这种增强是否以这些元素之间的关联处理受损的成本来实现.
主要方法:
- 122名参与者在编码刺激时经历了压力或控制事件.
- 识别记忆,包括时间序列效应 (识别原始化),在24小时后进行了测试.
- 功能近红外光谱学 (fNIRS) 监测大脑活动.
主要成果:
- 与非压力条件相比,参与者更好地回忆起压力下编码的单一事件.
- 事件的时间序列的记忆在压力下减少 (减少识别初始化).
- 在压力编码过程中,fNIRS在下和背侧前额皮层显示了相反的活动变化.
结论:
- 急性压力导致对个别事件的记忆力增强.
- 压力会损害这些事件在记忆中的整合和关联.
- 压力条件促进形成强烈但不好整合的记忆.
相关概念视频
Traumatic Memory
113
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...
113
Psychological Responses to Stress
74
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...
74
Introduction to Stress and Lifestyle
139
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...
139
Components of Stress
240
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.
Interestingly, the hidden cube faces also experience these stresses, equal and...
Interestingly, the hidden cube faces also experience these stresses, equal and...
240
Flashbulb Memory
99
A flashbulb memory is a highly vivid and detailed memory, often linked to events of significant emotional impact. These memories stand out in contrast to everyday memories due to their clarity and the precision with which they are recalled. The strong emotions associated with the event act as a catalyst, ensuring that specific details, such as one's location, actions, and even peripheral elements, are etched into memory with remarkable accuracy. For example, many people can vividly recall...
99
Types of Stressors
222
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...
Catastrophes
Catastrophes refer to large-scale, unpredictable events that create overwhelming stress and a sense of threat. Examples include natural disasters like...
222


