Fig. 2From: Polysomnography, brain volumetry, and mismatch negativity as early biomarkers of amnestic mild cognitive impairment progressionCoronal T1-weighted 3D spoiled gradient magnetic resonance images at the level of the midbrain for a 64-year progressive amnestic mild cognitive impairment patient showing a reduced right hippocampal volume (1.37 cm3) and b decreased right entorhinal cortex (1.35 cm3)Back to article page