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- W2116777802 abstract "The term ‘learned helplessness’ refers to a constellation of behavioral changes that follow exposure to stressors that are not controllable by means of behavioral responses, but that fail to occur if the stressor is controllable. This paper discusses the nature of learned helplessness, as well as the role of the dorsal raphe nucleus, serotonin, and corticotropin-releasing hormone in mediating the behavioral effects of uncontrollable stressors. Recent research indicates that (a) uncontrollable stressors sensitize serotonergic neurons in the dorsal raphe, and that a corticotropin-releasing factor-related ligand, acting at the Type II receptor, is essential to this sensitization process, and (b) the consequent exaggerated release of serotonin in response to subsequent input is at least in part responsible for the behavioral changes that occur. Finally, implications for the general role of corticotropin-releasing hormone in stress-related phenomena and for the learned helplessness paradigm as an animal model of either depression or anxiety are discussed." @default.
- W2116777802 created "2016-06-24" @default.
- W2116777802 creator A5011957342 @default.
- W2116777802 creator A5025282582 @default.
- W2116777802 date "2005-01-01" @default.
- W2116777802 modified "2023-10-14" @default.
- W2116777802 title "Stressor controllability and learned helplessness: The roles of the dorsal raphe nucleus, serotonin, and corticotropin-releasing factor" @default.
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- W2116777802 doi "https://doi.org/10.1016/j.neubiorev.2005.03.021" @default.
- W2116777802 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15893820" @default.
- W2116777802 hasPublicationYear "2005" @default.