White matter integrity predicts domain-specific risk perception: Insights from diffusion tensor imaging

Diffusion tensor imaging (DTI) noninvasively assesses the macroscopic organization of white matter (WM) brain tissue. Measures of fiber directionality can be quanitified, visualized, and anatomically mapped (Mukherjee et al., 2008). Behavioural and personality correlates of specified fiber pathways have been shown recently. Novelty seeking and reward dependence are linked to dissociable connectivity streams (Cohen et al., 2009) and neuroticism, openness and agreeableness are associated with WM integrity (Xu and Potenza, 2012). We expected WM integrity in frontostriatal pathways to correlate with risk perception…