Test session
We administered a liking task while participants were lying in the scanner. The task consisted in the evaluation of the perceived pleasantness, intensity, and familiarity of the two different stimuli (the milkshake and the tasteless solution). Participants were instructed to assess the solutions, focusing on their current perception of them. During each trial, 1 mL of the solution was administered, and the delivery order of the two conditions was randomized for each participant. Participants were visually guided through the task with on-screen instructions. First, they saw a 3-s countdown before the solution was delivered, followed by an asterisk presented for 4 s instructing them to keep the solution on their tongue until they saw the instruction to “swallow please” (see Fig. 