Gustatory responses in macaque monkeys revealed with fMRI: Comments on taste, taste preference, and internal state.

ABSTRACT: Studies of the neural mechanisms underlying value-based decision making typically employ food or fluid rewards to motivate subjects to perform cognitive tasks. Rewards are often treated as interchangeable, but it is well known that the specific tastes of foods and fluids and the values associated with their taste sensations influence choices and contribute to overall levels of food consumption. Accordingly, we characterized the gustatory system in three macaque monkeys (Macaca mulatta) and examined whether gustatory responses were modulated by preferences and hydration status. To identify taste-responsive cortex, we delivered small quantities (0.1 ml) of sucrose (sweet), citric acid (sour), or distilled water in random order without any predictive cues while scanning monkeys using event-re

SUBMITTER: Kaskan PM 

PROVIDER: S-EPMC6230501 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature