Acute stress disorder modifies cerebral activity of amygdala and prefrontal cortex

  title={Acute stress disorder modifies cerebral activity of amygdala and prefrontal cortex},
  author={Emmanuelle Reynaud and Eric Guedj and Marion Trousselard and Myriam El Khoury-Malhame and Xavier Yves Zendjidjian and E. Fakra and Marc Souville and Bruno Nazarian and Olivier Blin and Fr{\'e}d{\'e}ric Canini and St{\'e}phanie Khalfa},
  journal={Cognitive Neuroscience},
  pages={39 - 43}
The diagnosis constraint of acute stress disorder (ASD), consisting of testing individuals in the month following trauma exposure, limits research on the very early and initial stage of the disease. In this regard, this work aims to explore the cerebral mechanism of ASD in a population of fire-fighters before and after trauma exposure. Thirty-six healthy non-traumatized male fire-fighters were explored by an fMRI emotional face-matching task to evaluate the cerebral substrate of emotional… 

Acute stress disorder.

  • R. Bryant
  • Psychology
    Current opinion in psychology
  • 2017

The relationship between early and recent life stress and emotional expression processing: A functional connectivity study

This study adds to the growing body of literature suggesting that both the cumulative and the match/mismatch hypotheses are useful in explaining the effects of stress.

Neural contributors to trauma resilience: a review of longitudinal neuroimaging studies

An overview of the rapidly-growing body of longitudinal neuroimaging research on stress resilience is provided, which suggests stress resilience may be scaffolded by stable individual differences in the processing of threat cues, and further buttressed by post-trauma adaptations to the stressor that encompass multiple mechanisms and circuits.

Impaired Recognition of Emotional Faces after Stroke Involving Right Amygdala or Insula

Results provide additional support for a necessary role of the right amygdala and anterior insula within a network of regions underlying recognition of facial expressions, particularly those that have biological importance or motivational relevance and have implications for clinical practice.

Chronic stress and Alzheimer's disease

This review presents stress‐activated neural pathways involved in Alzheimer's disease from a clinical and experimental point of view, as well as supportive drugs and therapies.

Neural Modulation in Aversive Emotion Processing: An Independent Component Analysis Study

The results showed that an independent component, mainly cerebellar-medial-frontal, had a positive modulation associated with fear processing and another independent component showed a negative modulation that could be associated with implicit reappraisal of emotional stimuli.



The Neurocircuitry of Fear, Stress, and Anxiety Disorders

Additional research will be needed to clarify the exact role of each component of the fear circuitry in the anxiety disorders, determine whether functional abnormalities identified in the Anxiety disorders represent acquired signs of the disorders or vulnerability factors that increase the risk of developing them, and use functional neuroimaging to predict treatment response and assess treatment-related changes in brain function.

Regional cerebral blood flow in the amygdala and medial prefrontal cortex during traumatic imagery in male and female Vietnam veterans with PTSD.

A reciprocal relationship between medial prefrontal cortex and amygdala function in PTSD and opposing associations between activity in these regions and symptom severity consistent with current functional neuroanatomic models of this disorder are suggested.

Perfusion functional MRI reveals cerebral blood flow pattern under psychological stress.

  • Jiongjiong WangH. Rao J. Detre
  • Psychology, Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2005
The results provide neuroimaging evidence that psychological stress induces negative emotion and vigilance and that the ventral RPFC plays a key role in the central stress response.

Acute stress disorder: a synthesis and critique.

There is little justification for the ASD diagnosis in its present form, and the available evidence indicates that alternative means of conceptualizing acute trauma reactions and identifying acutely traumatized people who are at risk of developing PTSD need to be considered.

Amygdala response in patients with acute PTSD to masked and unmasked emotional facial expressions.

These findings suggest that functional abnormalities in brain responses to emotional stimuli observed in chronic PTSD are already apparent in its acute phase.

Modulating emotional responses: effects of a neocortical network on the limbic system

Functional MRI results provide evidence for a network in which higher regions attenuate emotional responses at the most fundamental levels in the brain and suggest a neural basis for modulating emotional experience through interpretation and labeling.

A functional magnetic resonance imaging study of amygdala and medial prefrontal cortex responses to overtly presented fearful faces in posttraumatic stress disorder.

These results provide evidence for exaggerated amygdala responsivity, diminished medial prefrontal cortexresponsivity, and a reciprocal relationship between these 2 regions during passive viewing of overtly presented affective stimuli unrelated to trauma in PTSD.

Approach-withdrawal and cerebral asymmetry: emotional expression and brain physiology. I.

These findings illustrate the utility of using facial behavior to verify the presence of emotion, are consistent with the notion of emotion-specific physiological patterning, and underscore the importance of anterior cerebral asymmetries for emotions associated with approach and withdrawal.