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Psychophysiology. 2013 Aug;50(8):758-66. doi: 10.1111/psyp.12058. Epub 2013 May 24.

The imaging Maastricht Acute Stress Test (iMAST): a neuroimaging compatible psychophysiological stressor.

Author information

1
Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands. conny.quaedflieg@maastrichtuniversity.nl

Abstract

Several protocols have been developed for inducing acute stress in laboratory settings. Still, effectively eliciting stress in a neuroimaging environment remains challenging. Here, we describe the evaluation of a combined physical and psychosocial stress protocol (n = 42). The imaging Maastricht Acute Stress Test (iMAST) consists of a 5-min preparation phase and a 10-min acute stress phase, with alternating trials of cold pressor stress generated through an advanced thermal stimulator and mental arithmetic challenges along with social-evaluative pressure (i.e., negative feedback). Results demonstrate that participants displayed meaningful subjective stress responses, as well as significant increases in salivary alpha-amylase and cortisol levels. Our data show that the iMAST may prove to be a potent alternative to existing imaging stress paradigms to explore poststress neuronal changes and brain determinants of resilience.

KEYWORDS:

Cortisol; Functional magnetic resonance imaging (fMRI); Maastricht Acute Stress Test (MAST); Stress reactivity; Stress tasks

PMID:
23701399
DOI:
10.1111/psyp.12058
[Indexed for MEDLINE]

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