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What ethologically based models have taught us about the neural systems underlying fear and anxiety BJMBR
Canteras,N.S.; Mota-Ortiz,S.R.; Motta,S.C..
Classical Pavlovian fear conditioning to painful stimuli has provided the generally accepted view of a core system centered in the central amygdala to organize fear responses. Ethologically based models using other sources of threat likely to be expected in a natural environment, such as predators or aggressive dominant conspecifics, have challenged this concept of a unitary core circuit for fear processing. We discuss here what the ethologically based models have told us about the neural systems organizing fear responses. We explored the concept that parallel paths process different classes of threats, and that these different paths influence distinct regions in the periaqueductal gray - a critical element for the organization of all kinds of fear...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fear; Predator exposure; Social threat; Fear memory; Contextual fear; Hypothalamus.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000400006
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