C05 - Effects of fasting and sleep deprivation on value-based and perceptual decision-making

This project examines how changes in hormone levels (e.g. ghrelin, leptin) due to fasting or sleep deprivation affect food-related and non-food-related decision processes. Both value-based decision making (using standard neuroeconomic paradigms and visual stimulation) and perceptual decision making (using olfactory psychometrics) are examined. Studies apply high-resolution functional magnetic resonance imaging of subcortical structures involved in reward, motivation and decision making, to clarify the mechanisms through which state-dependent hormonal changes translate into changes in behaviour.