Relative frontal brain asymmetry and cortisol release after social stress: The role of action orientation

Autor(en): Duesing, Rainer
Tops, Mattie
Radtke, Elise Leila
Kuhl, Julius 
Quirin, Markus
Stichwörter: Action orientation; Alpha asymmetry; ANXIETY; ATTENTION; BASE-LINE; BEHAVIORAL ACTIVATION; Behavioral Sciences; Cortisol; EEG; EEG ASYMMETRY; EMOTION REGULATION; Hypothalamic-pituitary-adrenal (HPA); INDIVIDUAL-DIFFERENCES; OXYTOCIN; Psychology; Psychology, Biological; Psychology, Experimental; RESPONSES; SENSITIVITY; system
Erscheinungsdatum: 2016
Herausgeber: ELSEVIER
Volumen: 115
Startseite: 86
Seitenende: 93
Social evaluation is a potent stressor and consistently leads to an activation of the hypothalamic-pituitary-adrenal system. Here, we investigated whether individual differences inaction orientation influence the relationship between the cortisol response to social-evaluative threat and relative left frontal electroencephalographic (EEG) alpha asymmetry as a brain marker of approach motivation. Forty-nine participants were exposed to a camera-based variant of the Trier Social Stress Task while salivary cortisol and resting EEG frontal alpha asymmetry were assessed before and after stress induction. Higher relative left frontal activity was associated with higher changes in cortisol levels as measured by the area under curve with respect to increase, particularly in individuals low in action orientation. We discuss the role of the left frontal cortex in coping, the potential role of oxytocin, and negative health consequences when the left-frontal coping process becomes overstrained. (C) 2016 Elsevier B.V. All rights reserved.
ISSN: 03010511
DOI: 10.1016/j.biopsycho.2016.01.012

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