Article (Scientific journals)
The default mode network and EEG regional spectral power: a simultaneous fMRI-EEG study.
Neuner, Irene; Arrubla Martinez, Jorge Andres; Werner, Cornelius J. et al.
2014In PLoS ONE, 9 (2), p. 88214
Peer Reviewed verified by ORBi
 

Files


Full Text
journal.pone.0088214.PDF
Publisher postprint (2.38 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Adult; Brain/anatomy & histology/physiology; Brain Mapping/methods; Brain Waves; Electroencephalography/methods; Female; Humans; Magnetic Resonance Imaging/methods; Male; Young Adult
Abstract :
[en] Electroencephalography (EEG) frequencies have been linked to specific functions as an "electrophysiological signature" of a function. A combination of oscillatory rhythms has also been described for specific functions, with or without predominance of one specific frequency-band. In a simultaneous fMRI-EEG study at 3 T we studied the relationship between the default mode network (DMN) and the power of EEG frequency bands. As a methodological approach, we applied Multivariate Exploratory Linear Optimized Decomposition into Independent Components (MELODIC) and dual regression analysis for fMRI resting state data. EEG power for the alpha, beta, delta and theta-bands were extracted from the structures forming the DMN in a region-of-interest approach by applying Low Resolution Electromagnetic Tomography (LORETA). A strong link between the spontaneous BOLD response of the left parahippocampal gyrus and the delta-band extracted from the anterior cingulate cortex was found. A positive correlation between the beta-1 frequency power extracted from the posterior cingulate cortex (PCC) and the spontaneous BOLD response of the right supplementary motor cortex was also established. The beta-2 frequency power extracted from the PCC and the precuneus showed a positive correlation with the BOLD response of the right frontal cortex. Our results support the notion of beta-band activity governing the "status quo" in cognitive and motor setup. The highly significant correlation found between the delta power within the DMN and the parahippocampal gyrus is in line with the association of delta frequencies with memory processes. We assumed "ongoing activity" during "resting state" in bringing events from the past to the mind, in which the parahippocampal gyrus is a relevant structure. Our data demonstrate that spontaneous BOLD fluctuations within the DMN are associated with different EEG-bands and strengthen the conclusion that this network is characterized by a specific electrophysiological signature created by combination of different brain rhythms subserving different putative functions.
Disciplines :
Radiology, nuclear medicine & imaging
Author, co-author :
Neuner, Irene
Arrubla Martinez, Jorge Andres ;  Université de Liège - ULiège > Doct. sc. bioméd. & pharma. (Bologne)
Werner, Cornelius J.
Hitz, Konrad
Boers, Frank
Kawohl, Wolfram
Shah, N. Jon
Language :
English
Title :
The default mode network and EEG regional spectral power: a simultaneous fMRI-EEG study.
Publication date :
2014
Journal title :
PLoS ONE
eISSN :
1932-6203
Publisher :
Public Library of Science, United States - California
Volume :
9
Issue :
2
Pages :
e88214
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 07 February 2017

Statistics


Number of views
62 (2 by ULiège)
Number of downloads
151 (0 by ULiège)

Scopus citations®
 
114
Scopus citations®
without self-citations
110
OpenCitations
 
95

Bibliography


Similar publications



Contact ORBi