Fig. 4.

Thresholded maps from the General Linear Model (GLM) analysis of the olfactory fMRI. (A) For vanillin, healthy controls showed higher activation in parts of right insula. (B) For coffee, healthy controls showed higher activation in parts of right insula and right orbitofrontal cortex. (C) For the combination of both odors, healthy controls showed higher activation in parts of insula bilaterally and for parts of the right orbitofrontal cortex. The right orbitofrontal cortex is annotated with green. Insula is annotated with blue. Color bars are given in terms of T-statistic and maps are thresholded at p < .001 (uncorrected). R: right hemisphere. The spatial brain maps were created with FSLeyes (FMRIB Analysis Group, University of Oxford, UK).