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Cited by 513

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Stressor categorization: acute physical and psychological stressors elicit distinctive recruitment patterns in the amygdala and in medullary noradrenergic cell groups

Dayas, C.V., Buller, K.M., Crane, J.W., Xu, Y., Day, T.A.·2001·European Journal of Neuroscience

Abstract

It has been hypothesized that the brain categorizes stressors and utilizes neural response pathways that vary in accordance with the assigned category. If this is true, stressors should elicit patterns of neuronal activation within the brain that are category‐specific. Data from previous immediate–early gene expression mapping studies have hinted that this is the case, but interstudy differences in methodology render conclusions tenuous. In the present study, immunolabelling for the expression of c‐fos was used as a marker of neuronal activity elicited in the rat brain by haemorrhage, immune challenge, noise, restraint and forced swim. All stressors elicited c‐fos expression in 25–30% of hypothalamic paraventricular nucleus corticotrophin‐releasing‐factor cells, suggesting that these stimuli were of comparable strength, at least with regard to their ability to activate the hypothalamic–pituitary–adrenal axis. In the amygdala, haemorrhage and immune challenge both elicited c‐fos expression in a large number of neurons in the central nucleus of the amygdala, whereas noise, restraint and forced swim primarily elicited recruitment of cells within the medial nucleus of the amygdala. In the medulla, all stressors recruited similar numbers of noradrenergic (A1 and A2) and adrenergic (C1 and C2) cells. However, haemorrhage and immune challenge elicited c‐fos expression in subpopulations of A1 and A2 noradrenergic cells that were significantly more rostral than those recruited by noise, restraint or forced swim. The present data support the suggestion that the brain recognizes at least two major categories of stressor, which we have referred to as ‘physical’ and ‘psychological’. Moreover, the present data suggest that the neural activation footprint that is left in the brain by stressors can be used to determine the category to which they have been assigned by the brain.

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Crossref · 10.1046/j.0953-816x.2001.01733.x

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Metadata

Authors
Dayas, C. V., Buller, K. M., Crane, J. W., Xu, Y., & Day, T. A.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2001-10
Volume
14
Issue
7
Pages
1143-1152
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2170926352
Cited by
513
References
5
FWCI
6.83
Type
journal article
Language
en
Open access
closed

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