FASt Track in Elective Neurosurgery: the Role of Low Propofol Bis-NOL Guided General Anaesthesia for Full, Early and Safe Awakening

Inclusion Criteria: * Patients with supra- and sub tentorial neurosurgical pathology who meet the following inclusion criteria will be enrolled: * Age greater than or equal to 18 years Exclusion Criteria: * Psychiatric illness in history and/or taking psychotropic drugs * Glasgow Coma Score (GCS) \< 15 * Presence of overt cognitive decline or speech disorders * Patients younger than 18 years of age * Intraoperative hypothermia (\< 36°) * Intraoperative hypotension (MAP \< 20% of baseline)