Supplementary Figure 3: Classification scores in the decoding analysis for subjective nutrient factors.
From: Elucidating the underlying components of food valuation in the human orbitofrontal cortex
We plot the classification scores in the lOFC ROI obtained by the classifier trained on fat, carb., protein and vitamin respectively as functions of the subjective nutrititive ratings (MEAN ± SEM across participants; n = 23; see Fig. 3a). Note that ratings for each nutrient factors were binned based on the rank order; that each classifier is trained to discriminate high vs. low ratings (i.e., 1 & 2 vs. 3 & 4); and that the classification weights of each voxel were estimated on a subset of the data and the classification scores were computed on the other subset of the data (i.e., leave-one-run-out cross-validation; see Methods for details). lOFC, lateral orbitofrontal cortex; and Carb., carbohydrade.
