A robotic system and associated method for predicting the likelihood of occurrence of hallucinations in a subject is disclosed. The system comprises a robotic master-slave device and computer means adapted to induce conflicting sensorimotor stimulations to a subject for inducing the feeling of a presence. Comparing subjective response data, combined with data related to the movement of the master-slave device, with reference data, allows to predict the likelihood of occurrence of hallucinations in a tested subject. The system and the method for using thereof can find applications in Parkinson's Disease patients for the prognostic evaluation of psychiatric-associated symptoms.
