Serotonin Role on Brain Circuits Involved in Food Avoidance in Anorexia Nervosa

Subjects will be asked to complete a food choice task in PET/MRI. During the task, PET and MRI scans will be acquired simultaneously. This will allow us to see in real time during food choices the brain activations of the subjects. For imaging we will inject the DASB tracer intravenously. This radio ligand is a tracer that allows us to see the cerebral serotoninergic transmission by positron emission tomography.

"The second technique used is the eye tracker that will allow us to analyze food avoidance behaviors through the eyes. With a TOBII eye tracker we wil be able to follow the gaze of the subjects during the food preference task. It is a non-invasive approach."