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. 2020 Nov 10;47:100881. doi: 10.1016/j.dcn.2020.100881

Fig. 4.

Fig. 4

Structural coherence of the AIns-NAcc tract is associated with diminished NAcc activity during anticipation of non-gains.

(A) The effect of AIns-NAcc tract coherence (mean fractional anisotropy) on NAcc activity is driven by decreased NAcc activity when participants anticipated non-gains (right: β=-0.28, t(89)=-2.70, p < 0.01; left: β=-0.21, t(89)=-2.02, p < 0.05). Bootstrapped correlations could demonstrate the robustness of the association in the right hemisphere (samples=10,000; right: p = 0.02; left: p = 0.09). A non-parametric Spearman’s correlation could confirm the robustness of the association in both hemispheres (rho: -0.20, 95 % confidence interval: -0.39, -0.003).

(B) AIns-NAcc tract coherence (mean fractional anisotropy) was not associated with NAcc activity when participants anticipated gains (right: β = 0.05, t(89) = 0.50, p = 0.62; left: β=0.02, t(89) = 0.19, p = 0.85). All regression coefficients are standardized. See Supplementary Fig. 5 for associations between AIns-NAcc tract coherence and functional activity from other trial phases.