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Mean number of trials needed to reach the criterion (standard deviations in bars) in positional and directional VReoT subtests, for aMCIsd, aMCImd, and HC. VReoT indicates virtual reorientation test; MCI, mild cognitive impairment; aMCIsd, amnestic MCI single domain; aMCImd, amnestic MCI multiple domain; HC, healthy controls.
