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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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Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
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Traumatic Memory01:20

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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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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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Responses to Salt Stress02:02

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Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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Related Experiment Video

Updated: Feb 16, 2026

A Reproducible Cartilage Impact Model to Generate Post-Traumatic Osteoarthritis in the Rabbit
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Functional neuroimaging in post-traumatic stress disorder.

J Douglas Bremner1

  • 1Emory University, Atlanta, GA 30306, USA. jdbremn@emory.edu

Expert Review of Neurotherapeutics
|April 12, 2007
PubMed
Summary

Traumatic stress impacts brain function, particularly in areas like the amygdala and hippocampus. Research shows these brain changes are linked to memory and the stress response in post-traumatic stress disorder.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Trauma Studies

Background:

  • Traumatic stress significantly affects brain function.
  • Key brain regions involved in the stress response include the amygdala, hippocampus, and prefrontal cortex.

Purpose of the Study:

  • To investigate the effects of traumatic stress on brain function.
  • To examine alterations in brain areas associated with the stress response and memory in post-traumatic stress disorder (PTSD).

Main Methods:

  • Replication of findings from animal studies in human patients with PTSD.
  • Analysis of brain imaging or functional studies in individuals with PTSD.

Main Results:

  • Alterations were observed in the amygdala, hippocampus, and prefrontal cortex of patients with PTSD.

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  • These brain areas are crucial for both the stress response and memory formation.

    • Conclusions:

    • The findings highlight a critical interplay between memory and the traumatic stress response.
    • Further research is needed to understand the relationship between recovery from traumatic stress and neurobiological changes.