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dc.contributor.author | Daffertshofer, Andreas |
dc.contributor.author | Ton, Robert |
dc.contributor.author | Kringelbach, Morten L. |
dc.contributor.author | Woolrich, Mark |
dc.contributor.author | Deco, Gustavo |
dc.date.accessioned | 2022-10-18T08:49:24Z |
dc.date.available | 2022-10-18T08:49:24Z |
dc.date.issued | 2018 |
dc.identifier.citation | Daffertshofer A, Ton R, Kringelbach ML, Woolrich M, Deco G. Distinct criticality of phase and amplitude dynamics in the resting brain. NeuroImage. 2018 Oct 15;180(Pt B):442-7. DOI: 10.1016/j.neuroimage.2018.03.002 |
dc.identifier.issn | 1053-8119 |
dc.identifier.uri | http://hdl.handle.net/10230/54463 |
dc.description | Includes supplementary materials for the online appendix. |
dc.description.abstract | Converging research suggests that the resting brain operates at the cusp of dynamic instability, as signified by scale-free temporal correlations. We asked whether the scaling properties of these correlations differ between amplitude and phase fluctuations, which may reflect different aspects of cortical functioning. Using source-reconstructed magneto-encephalographic signals, we found power-law scaling for the collective amplitude and for phase synchronization, both capturing whole-brain activity. The temporal changes of the amplitude comprise slow, persistent memory processes, whereas phase synchronization exhibits less temporally structured and more complex correlations, indicating a fast and flexible coding. This distinct temporal scaling supports the idea of different roles of amplitude and phase fluctuations in cortical functioning. |
dc.description.sponsorship | We would like to thank Michael Breakspear for the challenging discussion and the valuable contributions to this study. We received the following funding: GD, RT: ERC Advanced Grant: DYSTRUCTURE (n. 295129), GD: Spanish Research Project PSI2013-42091-P, Human Brain Project (n. H2020-720270), and FP7-ICT BrainScales (n. 269921). MLK: ERC Consolidator Grant CAREGIVING (n. 615539) and TrygFonden Charitable Foundation. MW: Wellcome Trust and an MRC UK MEG Partnership Grant (MR/K005464/1). AD: H2020-MSCA-ITN COSMOS (grant n. 642563). |
dc.format.mimetype | application/pdf |
dc.language.iso | eng |
dc.publisher | Elsevier |
dc.relation.ispartof | NeuroImage. 2018 Oct 15;180(Pt B):442-7 |
dc.rights | ©2018 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ |
dc.title | Distinct criticality of phase and amplitude dynamics in the resting brain |
dc.type | info:eu-repo/semantics/article |
dc.identifier.doi | http://dx.doi.org/10.1016/j.neuroimage.2018.03.002 |
dc.subject.keyword | Power laws |
dc.subject.keyword | Criticality |
dc.subject.keyword | DFA |
dc.subject.keyword | Amplitude |
dc.subject.keyword | Phase |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/269921 |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/642563 |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/720270 |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/615539 |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/295129 |
dc.relation.projectID | info:eu-repo/grantAgreement/ES/1PE/PSI2013-42091-P |
dc.rights.accessRights | info:eu-repo/semantics/openAccess |
dc.type.version | info:eu-repo/semantics/publishedVersion |