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相关概念视频

Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

35
Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
35
Traumatic Memory01:20

Traumatic Memory

90
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...
90
Dissociative Disorders01:27

Dissociative Disorders

115
Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
115
Repressed Memory01:16

Repressed Memory

89
Repressed memories are a psychological phenomenon where memories of traumatic events are unconsciously blocked from a person's awareness. This process occurs as a defense mechanism, protecting the mind from the emotional impact of distressing or painful experiences. For example, a person who has experienced childhood trauma may grow up with no conscious recollection of the event. In such cases, the memories are thought to be buried deep within the subconscious, inaccessible to the conscious...
89
Dissociative Identity Disorder01:30

Dissociative Identity Disorder

115
Dissociative Identity Disorder (DID), previously termed multiple personality disorder, is a complex psychological condition characterized by the presence of two or more distinct identities or personality states. Each identity exhibits unique patterns of behavior, voice, and mannerisms and may possess separate memories and emotional responses. The alternating control between identities can result in memory gaps and challenges in recalling daily activities, often exacerbating the individual's...
115
Dissociative Amnesia01:21

Dissociative Amnesia

112
Dissociative amnesia is a complex psychological condition that manifests as an inability to recall personal information, often tied to traumatic or stressful events. Unlike general amnesia, individuals with this condition retain the ability to perform routine activities and procedural tasks, such as operating a phone or navigating public transportation, yet experience profound gaps in autobiographical memory. These lapses may encompass significant life events, such as suicide attempts or...
112

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相关实验视频

Updated: Jul 4, 2025

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
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侵入性创伤重新体验领域:ENIGMA PTSD联盟的功能连接特征分类.

Benjamin Suarez-Jimenez1, Amit Lazarov2,3, Xi Zhu3

  • 1Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, Rochester, New York.

Biological psychiatry global open science
|February 1, 2024
PubMed
概括
此摘要是机器生成的。

休息状态功能连接 (rsFC) 可以区分创伤暴露的个体与患有PTSD或侵入性创伤重现领域 (ITRED) 的个体. 然而,rsFC并没有有效地区分PTSD与仅ITRED的组.

关键词:
在ITRED中,使用的是ITRED机器学习 机器学习创伤后应激障碍 (PTSD) 是一种重新体验重新体验.休息状态的功能连接.暴露于创伤的情况.

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科学领域:

  • 神经科学是一个神经科学.
  • 精神病学是一个精神病学.
  • 计算精神病学是一种计算精神病学.

背景情况:

  • 侵入性创伤重复体验领域 (ITRED) 是一个新概念,重点关注创伤后精神病理学中的非自愿重复体验症状.
  • ITRED提出了一个关于创伤后应激障碍 (PTSD) 研究的新视角,强调侵入性记忆,梦和回忆.

研究的目的:

  • 调查与侵入性创伤再体验领域 (ITRED) 相关的神经网络连接模式.
  • 探索休息状态功能连接 (rsFC) 在对患有PTSD,仅ITRED和仅暴露于创伤 (TE) 的个体进行分类时的实用性.

主要方法:

  • 利用了来自ENIGMA PTSD联盟9个站点的584名参与者的静止状态功能连接 (rsFC) 数据.
  • 采用机器学习方法 (随机森林分类) 来区分基于rsFC签名的PTSD,ITRED-only和TE-only组.
  • 使用交叉验证和独立测试数据集验证的分类模型性能,评估曲线下的面积 (AUC).

主要成果:

  • rsFC的签名在区分TE-only参与者和PTSD和ITRED-only组之间实现了约60%的准确性.
  • 使用rsFC,试图区分PTSD和ITRED-only个体时,分类准确性较低 (45%).
  • 默认模式网络 (DMN) 路径是区分TE-only参与者与PTSD和ITRED-only组的共同特征,而前对对联网络连接显示出独特的区分模式.

结论:

  • 神经网络连接为对创伤后精神病理学的分类提供了基于神经生物学的基础,支持ITRED作为一个独特的领域.
  • 结果表明rsFC可以区分一般的创伤暴露与特定的创伤后症状集群,但区分PTSD和ITRED需要进一步调查.