Rating changes over the course of meals: what do they tell us about motivation to eat?

摘要: Detailed analysis of the pattern change in rated appetite within a meal have proved useful technique through which to explore control. Variability individual ratings, and technical difficulties achieving ratings at equivalent stages meal, lead use curve-fitting techniques model changes across meal. These could best be described by quadratic function, three parameters (intercept, linear coefficients) represented distinct influences on size. In normal subjects, manipulations palatability opioid receptor blockade preloads alcohol all modified component this function only, while preloading with maltodextrin reduced start eating (the intercept) but not that Thus coefficient appears measure degree stimulation sensory characteristics food, intercept reflects baseline results suggest microstructural analyses rating allow some dissociation factors underlying motivation eat, provide novel methodology for future experimentation.