Paper Info
Title
Single or multiple frequency generators in on-going brain activity: A mechanistic whole-brain model of empirical MEG data.
Abstract
During rest, envelopes of band-limited on-going MEG signals co-vary across the brain in consistent patterns, which have been related to resting-state networks measured with fMRI. To investigate the genesis of such envelope correlations, we consider a whole-brain network model assuming two distinct fundamental scenarios: one where each brain area generates oscillations in a single frequency, and a novel one where each brain area can generate oscillations in multiple frequency bands. The models share, as a common generator of damped oscillations, the normal form of a supercritical Hopf bifurcation operating at the critical border between the steady state and the oscillatory regime. The envelopes of the simulated signals are compared with empirical MEG data using new methods to analyse the envelope dynamics in terms of their phase coherence and stability across the spectrum of carrier frequencies.
Year
DOI
Venue
2017
10.1016/j.neuroimage.2017.03.023
NeuroImage
Field
DocType
Volume
Topology,Neuroscience,Oscillation,Fundamental frequency,Signal generator,Psychology,Brain activity and meditation,Steady state,Genetics,Radio spectrum,Hopf bifurcation,Network model
Journal
152
ISSN
Citations 
PageRank 
1053-8119
11
0.68
References 
Authors
0
6
Name
Order
Citations
PageRank
Gustavo Deco11004156.20
Joana Cabral22188.92
Mark W Woolrich3172394.51
Angus Stevner4201.59
Tim J. Van Hartevelt5151.12
Morten L. Kringelbach618521.07