Choices between 2 mixtures of milkshakes with varying sugary and fatty composition (vectorial choice options). In ventral striatum, ventral midbrain and orbitofrontal cortex (OFC), preferred milkshakes (from blue to green to red) elicit stronger scalar BOLD responses, whereas equally preferred milkshakes (indifference, same colour) elicit similar responses. View the report here (Seak et al. 2021).