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Abstract #4680

A FMRI GRAPH THEORY STUDY OF THE EFFECT OF GENDER AND AGING ON TOPOLOGY OF FUNCTIONAL BRAIN NETWORKS

Paola Valsasina 1 , Maria A. Rocca 1 , Alessandro Meani 1 , Francesco Mele 1 , Federica Agosta 1 , and Massimo Filippi 1

1 Neuroimaging Research Unit, Institute of Experimental Neurology, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, MI, Italy

Using graph theoretical analysis, we analyzed the combined effects of age and gender on large-scale functional brain networks. Significant age-related abnormalities were detected in both genders. Males showed higher average network values than females. Both genders experienced a significant age-related decline of nodal degree and local efficiency of several regions of the frontal lobe, temporal regions, posterior cingulate cortex/precuneus and deep gray matter nuclei. The age-related decline of functional network connectivity measures in both genders might contribute to clarify fundamental pathophysiologic aspects of healthy aging.

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