Digital Game: A Scale to Evaluate the Perioperative Cognitive Function

Inclusion Criteria: * Be a candidate for elective surgery small and medium-sized under general anesthesia for any surgical specialty. Have at least nine years of schooling or more, have between 20 and 40 years and want to participate in the research of their own free will. * diagnosis of Hypertension of Pressure Normal (HPN), the absence of malignancy, well-controlled clinical comorbidities (hypertension, diabetes mellitus, hormonal disorders, etc.) with predictive tools of post surgery results: tap test, lumbar infusion test, and continuous 72-hours external lumbar drainage and pressure monitoring. Exclusion Criteria: * Provide a history of psychiatric disorders and dementias that affect cognition, lack of knowledge of the Portuguese language, use metal clips or cardiac pacemaker that preclude the examination by Functional Magnetic Resonance Imaging. * diagnosis of secondary HPN, inability to walk, malignancy, clinical comorbidities uncontrolled presenting a history of psychiatric disorders and dementias that affect cognition, for instance Alzheimer's Dementia, lack of knowledge of the Portuguese language, use metal clips or marked heart step, which makes the examination by Functional Magnetic Resonance Imaging no functionality.