The striatum, the hippocampus, and short-term memory binding: Volumetric analysis of the subcortical grey matter's role in mild cognitive impairment.

Mean group differences in the outcome of the STM task presented Shape-Only (with 3 objects), HVLT delayed recall and Rey figure delayed recall had only marginal significance ( P = 0.041 - 0.043). 3.2.2 Group comparison between imaging variables Group comparison of imaging markers in MCI and control groups yielded significant differences in right hippocampal, total hippocampal, and parahippocampal gyrus volumes and no significant differences in other subcortical areas (i.e. all corrected by head size, Table 2 , Supplementary Figure S2).

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Although the grey matter volume in the globus pallidus ( r = -0.71, p < 0.001) and parahippocampal gyry ( r = -0.63, p < 0.05) correlated with a STM binding task in the MCI group, only the former remained associated with STM binding deficits in MCI patients, after correcting for age, gender and years of education (β = -0.56, P = 0.042) although with borderline significance.

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