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Table 2 Volumetric measurements for several brain structures in patients (n = 18) and controls (n = 30)

From: The brain structural and cognitive basis of odor identification deficits in mild cognitive impairment and Alzheimer's disease

Brain areas Control mean ± SD Patients mean ± SD
Hemispheric white matter 30.34 ± 1.90 29.37 ± 2.21
Cortical grey matter 29.46 ± 1.65 27.67 ± 1.84*
Hippocampus 0.49 ± 0.05 0.41 ± 0.04**
Amygdala 0.23 ± 0.02 0.20 ± 0.03**
Thalamus 1.20 ± 0.07 1.09 ± 0.07
Total ventricular volume 0.47 ± 0.15 0.74 ± 0.23**
  1. Independent sample t-test (two-tailed): *p < 0.05 and **p < 0.005.
  2. For bilateral structures volumes in the two hemispheres were combined, and all values are given as a percentage of total intracranial volume.