Group: Normal-weight, NON-food addicted control participants  no food addiction, no eating disorder, no nutrition troubles, no weight management troubles BMI: between 18.5 kg/m2 and 25 kg/m2 age 18 to 70 years right-handed male / female able to understand instructions and perform tasks no psychiatric or neurological disorders no drug abuse written and informed consent  Group: obese, food addicted  BMI >= 30 kg/m2 YFAS score > = 2 no other addictions age 18 to 70 years right-handed male / female able to understand instructions and perform tasks no recently diagnosed psychiatric or neurological disorders no drug abuse written and informed consent  Group: obese, NON-food addicted  age 18 to 70 years BMI >= 30 kg/m2 YFAS score < =1 no other addictions right-handed male / female able to understand instructions and perform tasks no recently diagnosed psychiatric or neurological disorders no drug abuse written and informed consent  Exclusion Criteria:  bad MRI quality drop out