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Related Concept Videos

Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

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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,...
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Traumatic Memory01:20

Traumatic Memory

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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...
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Dissociative Disorders01:27

Dissociative Disorders

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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
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Repressed Memory01:16

Repressed Memory

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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...
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Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
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False Memories01:18

False Memories

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False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
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Related Experiment Video

Updated: May 4, 2026

Developing Neuroimaging Phenotypes of the Default Mode Network in PTSD: Integrating the Resting State, Working Memory, and Structural Connectivity
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Substance abuse, memory, and post-traumatic stress disorder.

Megan E Tipps1, Jonathan D Raybuck1, K Matthew Lattal1

  • 1Department of Behavioral Neuroscience, Oregon Health & Science University, United States.

Neurobiology of Learning and Memory
|December 19, 2013
PubMed
Summary

This review examines how nicotine, cocaine, and alcohol impact memory and fear learning. Substance abuse can hinder the treatment of post-traumatic stress disorder (PTSD).

Keywords:
AmygdalaConsolidationExtinctionHippocampusPrefrontal cortexReconsolidationStress

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Area of Science:

  • Neuroscience
  • Psychology
  • Pharmacology

Background:

  • Substance abuse is frequently comorbid with anxiety disorders like post-traumatic stress disorder (PTSD).
  • Abused substances significantly affect memory and cognitive functions.
  • Understanding these effects is crucial for treating comorbid conditions.

Purpose of the Study:

  • To review the cognitive effects of nicotine, cocaine, and alcohol on memory.
  • To explore how these substances interact with fear learning processes relevant to PTSD.
  • To identify potential barriers substance abuse poses to PTSD treatment.

Main Methods:

  • Literature review of studies on nicotine, cocaine, and alcohol.
  • Analysis of neurobiological mechanisms underlying substance effects on memory.
  • Examination of interactions between substance use, fear acquisition, consolidation, and extinction.

Main Results:

  • Nicotine, cocaine, and alcohol differentially impact learning and memory through various neurobiological pathways.
  • These substances can interfere with the acquisition, consolidation, and extinction of learned fear.
  • Cognitive and affective effects of substance abuse complicate PTSD development and maintenance.

Conclusions:

  • Substance abuse, particularly with nicotine, cocaine, and alcohol, can negatively impact PTSD development, maintenance, and treatment.
  • The neurobiological and cognitive effects of these drugs present significant challenges for effective PTSD therapy.
  • Further research is needed to address the complex interplay between substance use disorders and PTSD.