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A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
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Time-dependent Increase in the Network Response to the Stimulation of Neuronal Cell Cultures on Micro-electrode Arrays
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Memory under stress: from single systems to network changes.

Lars Schwabe1

  • 1Department of Cognitive Psychology, Institute of Psychology, University of Hamburg, Von-Melle-Park 5, 20146, Hamburg, Germany.

The European Journal of Neuroscience
|November 19, 2016
PubMed
Summary
This summary is machine-generated.

Acute stress impacts learning and memory by altering brain networks. This shift favors habitual over cognitive processes, potentially increasing psychopathology risk with overreliance.

Keywords:
dorsal striatumglucocorticoidshippocampusmultiple memory systemsnoradrenalineprefrontal cortex

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Endocrinology

Background:

  • Stressful events significantly affect learning and memory processes.
  • Catecholamines and glucocorticoid hormones mediate stress effects on memory.
  • The hippocampus is crucial for episodic memory, but other brain regions are also involved.

Purpose of the Study:

  • To investigate how acute stress reconfigures neural networks influencing learning and memory.
  • To understand the shift from cognitive to habitual memory control under stress.
  • To explore the role of amygdala connectivity in stress-induced memory changes.

Main Methods:

  • Analysis of neural network reconfiguration following acute stress.
  • Examination of stress hormone effects (catecholamines, glucocorticoids) on memory systems.
  • Investigation of functional connectivity changes in brain regions like the amygdala, hippocampus, and striatum.

Main Results:

  • Acute stress triggers large-scale neural network shifts, favoring habitual over cognitive memory processes.
  • Stress alters connectivity between the amygdala, hippocampus, dorsal striatum, and prefrontal cortex.
  • This bias facilitates coping with immediate threats but may pose long-term risks.

Conclusions:

  • Stress-induced neural reconfiguration impacts learning and memory by promoting reflexive over cognitive control.
  • Altered amygdala connectivity plays a key role in this stress-related memory shift.
  • Over-reliance on habitual memory systems due to stress can be a risk factor for psychopathology.