Title
Functional Hubs In Mild Cognitive Impairment
Abstract
We investigate how hubs of functional brain networks are modified as a result of mild cognitive impairment (MCI), a condition causing a slight but noticeable decline in cognitive abilities, which sometimes precedes the onset of Alzheimer's disease. We used magnetoencephalography (MEG) to investigate the functional brain networks of a group of patients suffering from MCI and a control group of healthy subjects, during the execution of a short-term memory task. Couplings between brain sites were evaluated using synchronization likelihood, from which a network of functional interdependencies was constructed and the centrality, i.e. importance, of their nodes was quantified. The results showed that, with respect to healthy controls, MCI patients were associated with decreases and increases in hub centrality respectively in occipital and central scalp regions, supporting the hypothesis that MCI modifies functional brain network topology, leading to more random structures.
Year
DOI
Venue
2015
10.1142/S0218127415500340
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
Keywords
DocType
Volume
Functional brain networks, synchronization likelihood, centrality, hub characterization, mild cognitive impairment
Journal
25
Issue
ISSN
Citations 
3
0218-1274
0
PageRank 
References 
Authors
0.34
3
10
Name
Order
Citations
PageRank
Adrián Navas100.34
David Papo21189.75
Stefano Boccaletti319315.05
Francisco del Pozo420925.65
Ricardo Bajo5344.24
Fernando Maestú66310.86
J. H. Martínez700.34
Pablo Gil800.34
Irene Sendiña-Nadal935015.43
Javier M. Buldú10337.06