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The common biological mechanism that is possibly involved is the activation of the

hypothalamic-pituitary-adrenal (HPA) by these various psychosocial stressors, and the

subsequent release of glucocorticoids. The hippocampus, which has a high density of

glucocorticoid receptors, is part of the feedback system that modulates the activation of the

HPA axis.

When exposure to stressors persists and heightened glucocorticoid release is chronic, there

can be permanent changes in the HPA axis such that corticosterone release is augmented, of

which high levels would have damaging effects on the hippocampus.

stress-induced dysregulation of the HPA axis and dopaminergic systems result in a

hypersensitive state. As these dopaminergic systems are important in interpretation of

stress and threat-related stimuli, this state could lead to anomalous conscious experiences

like heightened perception, and psychotic experiences like delusions and hallucinations.

Sumber lain says

the dorsal hippocampus, analogous to the posterior hippocampus in primates, is thought to

subserve the more cognitive functions of the hippocampus whereas the ventral regions

(anterior in primates) are thought to reflect more limbic portions of the hippocampus.

the ventral hippocampus is thought to be the prin-ciple hippocampal area associated with

the negative regulation of HPA function in response to psychological stressors.

In addition, the ventral hippocampus is not only associated with the stress response, but can

also regulate emotion and affect and thus represents a poten-tial site of convergence by

which stress could augment symptoms associated with neuropsychiatric diseases. Indeed,

alterations in ventral hippocampal structure and function are routinely associ-ated with

psychological disorders including schizophrenia.

activation of the hippocampus decreases glucocorticoid secretion in both rat and human.

dopamine transmission in patients that is directly correlated with the positive symptoms of

the disease.

that vHipp activation induces increases in dopamine efflux in forebrain targets, such as the

nucleus accumbens, suggesting that the vHipp can augment dopamine neuron activity.

central role of the hippocampus in the regulation of dopamine neuron activity,

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the vHipp is known to be activated by psychological stressors suggesting that stress may

augment dopamine system function;

These data suggest that stress augments dopamine neuron activity;

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