Abstract
This voxel-based morphometry study investigated whether the personality trait disgust proneness is associated with gray matter volume (GMV) of distinct brain regions implicated in disgust processing. We analyzed brain structural data from 99 healthy women, who had rated their tendency to experience disgust for different disgust domains (offensive food, death, poor hygiene, decay, and body secretions). Food-related disgust proneness was positively correlated with insula volume. The disgust domains decay and death showed negative correlations with GMV of the dorsomedial and the dorsolateral prefrontal cortex (DMPFC, DLPFC). Our data implicate that only core disgust shows an association with the GMV of the gustatory cortex, whereas the reactivity to other disgust areas is linked with cognitive control areas.
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