During psychosis major alterations occur in the way the subject interacts with his own environment. The origin of such condition appears to be more complex then a unidirectional top-down or bottom-up alteration. The study concerns inpatients with a psychotic acute phase that have been hospitalized at the clinical psychiatric ward of Pavia. Questionnaires concerning interoceptive processing, exteroceptive processing, psychotic and autistic symptomatology will be collected at T0 (admission) and T1 (dimission) with the primary aim to observe correlations between the different perceptive and psychopathological dimensions. As a secondary aim we will compare the profiles of the subjects with psychosis with the ones of neurotypical subjects, in order match differences and similarities between groups.