Repetitive Transcranial Magnetic Stimulation of the Posterior Parietal Cortex in Patients Suffering From Gilles de la Tourette Syndrome

Inclusion Criteria: * Gilles de la Tourette syndrome as defined by DSM IV-R * Yale Global Tics Severity Scale (YGTSS) score between 30 et 60 * Premonitory sensations (" urge to move ") * Affiliated to the French social security regime * Ability to give informed consent Exclusion Criteria: * rTMS : epilepsy, craniotomy scar, pacemaker or neural stimulator, metal implants or foreign bodies, claustrophobia, pregnancy * Cognitive impairment (MMS ≤ 24/30) * Axis I disorders according to DSM IV-R : psychosis or history of psychosis, bipolar illness, major depressive disorder, addictions (except to nicotine) * Impulse control disorders * Other chronic debilitating illnesses * Unability to give informed consent * Participation in another clinical trial