psycological and physiological responses to stress: a review based on results from pet and mri studies

Clicks: 106
ID: 141269
2008
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Abstract
A new application for the nuclear imaging techniques is the study of organic responses to stress. Neuroimaging techniques allow the assessment of brain activation changes in association with the metabolic responses to stress. In this paper, a review of general effects of the stress on organic activity is made, emphasizing important advances introduced by studies using PET and fMRI. The importance of the hypothalamus-pituitary-adrenal axis to onset the adequate psychical and organic responses to sustain the homeostasis during the stress is discussed, as well as the possibility of traumatic stressing experiences have negative effects on the brain.
Uma nova aplicação para as técnicas de imagem nuclear é o estudo de respostas orgânicas ao estresse. Técnicas de neuroimagem permitem observar as mudanças da ativação cerebral associadas às respostas metabólicas ao estresse. Neste artigo, uma revisão dos efeitos do estresse sobre a atividade orgânica é feita, enfatizando importantes avanços introduzidos por estudos realizados com PET e fMRI. A importância do eixo hipotálamo-hipófise-adrenal para o disparo das respostas orgânicas e psíquicas para a manutenção da homeostasia durante o estresse é discutida, bem como a possibilidade de experiências estressantes traumáticas exercerem efeitos negativos sobre o cérebro.
Reference Key
cortez2008brazilianpsycological Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Célia Martins Cortez;Frederico Alan de Oliveira Cruz;Dilson Silva
Journal current drug delivery
Year 2008
DOI
10.1590/S1516-89132008000700003
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700003
Keywords
stress nuclear imaging physiological responsesbiotechnology

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