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Abstract #4310

DIFFERENCES IN DMN FUNCTIONAL CONNECTIVITY BEFORE AND AFTER CLINICAL DIAGNOSIS OF AMNESTIC MCI

Eva Manzanedo Senz 1 , Alexandra Cristobal Huerta 1 , Elena Molina Molina 1 , Ana Beatriz Solana 2 , Virginia Mato 1 , Daniel Garca Frank 1 , Eva Alfayate 3 , Juan lvarez-Linera 4 , and Juan Antonio Hernndez-Tamames 1

1 Universidad Rey Juan Carlos, Mstoles, Madrid, Spain, 2 General Electric, Munich, Germany, 3 Fundacin Reina Sofa - Fundacin CIEN, Madrid, Madrid, Spain, 4 Hospital Rber Internacional, Madrid, Madrid, Spain

Default mode network functional connectivity differences between amnestic Mild Cognitive Impairment (aMCI) patients before and after being diagnosed and their differences with healthy controls (HC) were analyzed in this work. Two sessions per subject, separated in time 39922 days, were included in the analysis. Our findings corroborate that DMN functional connectivity impairment and compensation effects coexist in aMCI compared to HC. Moreover, the compensation effect is significant at least one year before aMCI diagnosis and covers larger areas. Therefore DMN rsfMRI connectivity alterations could be useful for early detection of aMCI or even of Alzheimers Disease.

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