Are Sleeping Disorders Associated With Visceral Hypersensitivity in Irritable Bowel Syndrome Patients ?

Inclusion Criteria: 1. Healthy volunteers \- Person aged over 18 years with no IBS and no Insomnia 2. Patients with insomnia \- Patient aged over 18 years with no IBS and no Insomnia 3. Patients with IBS \- Patient aged over 18 years with IBS 4. patients with insomnia and IBS - Patient aged over 18 years with IBS Exclusion Criteria: * Active chronic organic disease * Endometriosis * Opioids consumption * Change in chronic treatment in the last 30 days * Hypersensitivity to Normacol * Patient with blood dyscrasia disorder known or identified, anticoagulant or antiplatelet treatments * Rectal pathology * Intestinal occlusion * Severe renal failure * Sodium retention * Anal pathology (anal fissure, hemorrhoidal thrombosis) * Person with administrative or judicial decision or under legal protection measure * Patient participating in another trial in the last 30 days * Pregnant or breastfeeding women * Impossibility to keep fasting for 12 hours