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Related Experiment Video

Updated: Jul 14, 2026

Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm

Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm

Published on: May 4, 2020

Glucocorticoid hyper- and hypofunction: stress effects on cognition and aggression.

Jeansok J Kim¹, József Haller

¹Department of Psychology and Program in Neurobiology & Behavior, University of Washington, Seattle, WA 98020, USA. jeansokk@u.washington.edu

Annals of the New York Academy of Sciences

|May 22, 2007

Summary

Stress impacts memory and aggression via glucocorticoid (GC) function. Both GC excess and deficiency alter brain function, affecting cognition and behavior with significant implications.

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Area of Science:

Neuroscience
Endocrinology
Behavioral Science

Background:

Stress responses significantly impact cognition and behavior.
Glucocorticoids (GCs) play a crucial role in mediating these effects.
Dysregulation in GC function (hyper- or hypofunction) is linked to cognitive and behavioral alterations.

Purpose of the Study:

To review the neural mechanisms underlying stress effects on memory and aggression.
To focus on the roles of glucocorticoid hyper- and hypofunction.
To explore the neurobiological basis of stress-related cognitive and behavioral changes.

Main Methods:

Review of existing literature on stress, glucocorticoids, memory, and aggression.
Focus on neural pathways involving the hippocampus, amygdala, and prefrontal cortex (PFC).
Examination of the impact of uncontrollable stress and glucocorticoid deficiency.

Main Results:

Uncontrollable stress impairs hippocampal memory and long-term potentiation (LTP).
A neural-endocrine network (amygdala, PFC, GCs) regulates stress effects on memory.
Chronic decreased glucocorticoid production correlates with antisocial aggressiveness, linked to PFC and amygdala dysfunction.

Conclusions:

Stress-induced alterations in hippocampal LTP contribute to memory impairments.
Glucocorticoid deficiency leads to antisocial aggressiveness via specific brain circuit and neurotransmitter changes.
Understanding these neurobiological mechanisms is vital for individual and social well-being.