Overview of the liking task.
palates
This task was performed while participants were lying in the scanner and equipped with a 3D-printed pacifier-shaped fMRI mouthpiece paired with a gustometer. After a countdown (3–1) on a screen, participants saw a fixation cross followed by the delivery of a tasteless solution or a chocolate milkshake in their mouths. They were requested to keep the solution on their tongues for 4 s before being asked to swallow it. They were asked to rate the pleasantness, familiarity, and intensity of the solution. Rinse trials were intertwined with experimental trials so that participants could cleanse their palates.