Abstract (eng)
The present study examines the association between coping with stress and brain structure. Krohne’s Model of Coping Modes (1993) served as the theoretical frame for classifying the subjects according to their prefered coping style. The clinically healthy subjects (aged 30-60) were divided into four groups, based on their results in the “Angstbewältigungs-Inventar” (Krohne & Egloff, 1999; English version: Mainz Coping Inventory, Krohne et al., 2000) on the dimensions “cognitive avoidance” (COV) and “vigilance” (VIG): Represser (high scores on COV, low scores on VIG), sensitizer (low scores on COV, high scores on VIG), high-anxious (high scores on both dimensions) and non-defensive (low scores on both dimensions). The analysis of the data via voxelbased morphometrics showed significant structural differences in the grey as well as the white matter for the group comparisons via t-tests with the covariate age for repressers and sensitizers as well as non-defensives and sensitizers. Repressers displayed an increase of grey matter volumes in regions of the parietal lobe and occipital lobe, the precuneus and cuneus. In the areas of the frontal and parietal lobe, specifically in the postcentral gyrus and the limbic lobe, repressers exhibited higher volumes of white matter, compared to sensitizers. Non-defensives differed from sensitizers regarding grey matter volumes in the frontal lobe, Brodmann area 10, as well as white matter volume in the frontal lobe. White matter volumes were significantly higher in Brodmann area 10, gyrus rectus the limbic lobe and anterior cingulate cortex. The results regarding the differences between repressers and sensitizers can be interpreted in accordance with previous literature, showing repressers to be highly sensitive towards stress-related stimuli and to exhibit attention and memory biases. So far, non-defensives have been widely neglected in former research. The results of this study can serve as an indication for a possibly adaptive coping strategy that has not been taken into account, yet.