Interaction of Otolith Stimulation and Carotid Baroreflex in Humans

Inclusion Criteria: * Healthy volunteers, male and / or female aged 18-30 years * subject affiliated to a social security scheme, agreeing to participate in the study and who provided informed consent. Exclusion Criteria: * who participated in a clinical trial within less than the period of exclusion from this project * with a past or present history of heart disease, vascular, neurological, respiratory, rheumatological, metabolic or otologic. * pregnant women (dosage beta HCG) * having taken any medication heart, vascular, neurological, respiratory, rheumatological, metabolic or might interfere on vestibular test results during the two years preceding the experiment. * smoking or smoking more than 5 cigarettes / day, 1 cigarette / day or 1 pipe / day