Beneficial Effects of Preference on Behavior in DOC Patients (COGNICOMA)

Inclusion Criteria: * Disorders of consciousness (Traumatic brain injury, stroke or anoxic encephalopathy) * Coma diagnosis (Plum and Posner, 1966), vegetative state (Task Force, 1994) or minimally conscious state (Giacino, Ashwal et al. 2002) * Lack of autonomic crisis since one week minimum * Medical condition considered stable * Patients who do not present hearing loss. Peaks I and II of Brainstem Auditory Evoked Potentials (BAEP) will be normal. Exclusion Criteria: * Hearing Problem * Uncontrolled Epilepsy * Autonomic crises * Medical unstable state * Pregnant or likely to be (interrogation data) or breastfeeding woman