Patients' results, adjusted for age and education, to the neuropsychological assessments while sitting, supine and during head-up tilt.

FR: final result of Brief Mental Deterioration battery; HUT: head-up tilt; MMSE: Mini Mental State Examination; N.V.: normal values; SF: semantic fluency; WF: word fluency; Stroop T: time needed to perform Stroop test; Stroop E: errors performed during Stroop test. Data highlighted in bold are outside normative range according to the Italian standardization.