Nested synchrony - a novel cross-scale interaction among neuronal oscillations

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Monto, Simo 2017-05-11T07:29:28Z 2017-05-11T07:29:28Z 2012
dc.identifier.citation Monto , S 2012 , ' Nested synchrony - a novel cross-scale interaction among neuronal oscillations ' FRONTIERS IN PHYSIOLOGY , vol 3 , 384 , pp. 1-7 . DOI: 10.3389/fphys.2012.00384 en
dc.identifier.other PURE UUID: 59595585-4f0d-4a07-8d36-c69683990a9d
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dc.description.abstract Neuronal interactions form the basis for our brain function, and oscillations and synchrony are the principal candidates for mediating them in the cortical networks. Phase synchrony, where oscillatory neuronal ensembles directly synchronize their phases, enables precise integration between separated brain regions. However, it is unclear how neuronal interactions are dynamically coordinated in space and over time. Cross-scale effects have been proposed to be responsible for linking levels of processing hierarchy and to regulate neuronal dynamics. Most notably, nested oscillations, where the phase of a neuronal oscillation modulates the amplitude of a faster one, may locally integrate neuronal activities in distinct frequency bands. Yet, hierarchical control of inter-areal synchrony could provide a more comprehensive view to the dynamical structure of oscillatory interdependencies in the human brain. In this study, the notion of nested oscillations is extended to a cross-frequency and inter-areal model of oscillatory interactions. In this model, the phase of a slower oscillation modulates inter-areal synchrony in a higher frequency band. This would allow cross-scale integration of global interactions and, thus, offers a mechanism for binding distributed neuronal activities. We show that inter-areal phase synchrony can be modulated by the phase of a slower neuronal oscillation using magnetoencephalography (MEG). This effect is the most pronounced at frequencies below 35 Hz. Importantly, changes in oscillation amplitudes did not explain the findings. We expect that the novel cross-frequency interaction could offer new ways to understand the flexible but accurate dynamic organization of ongoing neuronal oscillations and synchrony. en
dc.format.extent 1-7
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries FRONTIERS IN PHYSIOLOGY en
dc.relation.ispartofseries Volume 3 en
dc.rights openAccess en
dc.title Nested synchrony - a novel cross-scale interaction among neuronal oscillations en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department School services, SCI
dc.subject.keyword neuronal oscillations
dc.subject.keyword magnetoencephalography
dc.subject.keyword nested oscillations
dc.subject.keyword oscillation synchrony
dc.identifier.urn URN:NBN:fi:aalto-201705113914
dc.identifier.doi 10.3389/fphys.2012.00384
dc.type.version publishedVersion

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