Functional Connectivity of the Interoceptive Network in RLS

Inclusion Criteria: * Person aged from 18 to 70 years * Only for the patients : ny patient with a diagnosis of idiopathic RLS based on medical history and the presence of the 5 RLS diagnostic criteria * Normal clinical examination * Person affiliated or benefiting from a social security scheme * Free, informed and written consent signed by the participant and the investigator (no later than the day of inclusion and prior to any review required by the research). Exclusion Criteria: * Any significant psychiatric illness or mood disorder * History or presence of chronic pain other than that associated with RLS, history of epilepsy or serious head injury, history of peripheral neuropathy, diabetes * Clinically significant sleep apnea, narcolepsy, or any secondary causes of RLS (e.g. chronic renal failure/hemodialysis, pregnancy) * Other active clinically significant illness, including unstable cardiovascular, or neoplasic pathology which could interfere with the study conduct or interfere with study assessments or compromise the study participation * Contra-indication to MRI (pacemakers, aneurysm clips, artificial heart valves, ear implants, metal fragments or foreign objects in the eyes, skin or body, claustrophobia or refusing MRI) * Pregnant or breastfeeding woman * Persons referred to in articles L.1121-5 to L.1121-8 (persons deprived of liberty by judicial or administrative decision, minors, adults subject to a legal protection measure or unable to express their consent).