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- W2057201715 abstract "There has been a relative lack of research into the neurobiological predispositions that confer vulnerability to depression. This article reviews functional brain mappings from a genetic animal model, the congenitally helpless rat, which is predisposed to develop learned helplessness. Neurometabolic findings from this model are integrated with the neuroscientific literature from other animal models of depression as well as depressed humans. Changes in four major brain systems are suggested to underlie susceptibility to helplessness and possibly depression: (a) an unbalanced prefrontal-cingulate cortical system, (b) a dissociated hypothalamic-pituitary-adrenal axis, (c) a dissociated septal-hippocampal system, and (d) a hypoactive brain reward system, as exemplified by a hypermetabolic habenula-interpeduncular nucleus pathway and a hypometabolic ventral tegmental area-striatum pathway. Functional interconnections and causal relationships among these systems are considered and further experiments are suggested, with theoretical attention to how an abnormality in any one system could affect the others." @default.
- W2057201715 created "2016-06-24" @default.
- W2057201715 creator A5011542591 @default.
- W2057201715 creator A5091300751 @default.
- W2057201715 date "2003-09-01" @default.
- W2057201715 modified "2023-10-16" @default.
- W2057201715 title "Brain Systems Underlying Susceptibility to Helplessness and Depression" @default.
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