Modulation of cortical slow oscillations and complexity across anesthesia levels
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- dc.contributor.author Dasilva, Miguel
- dc.contributor.author Camassa, Alessandra
- dc.contributor.author Navarro-Guzman, Alvaro
- dc.contributor.author Pazienti, Antonio
- dc.contributor.author Perez-Mendez, Lorena
- dc.contributor.author Zamora-López, Gorka
- dc.contributor.author Mattia, Maurizio
- dc.contributor.author Sanchez-Vives, Maria V.
- dc.date.accessioned 2022-06-21T05:56:50Z
- dc.date.available 2022-06-21T05:56:50Z
- dc.date.issued 2021
- dc.description.abstract The ability of different groups of cortical neurons to engage in causal interactions that are at once differentiated and integrated results in complex dynamic patterns. Complexity is low during periods of unconsciousness (deep sleep, anesthesia, unresponsive wakefulness syndrome) in which the brain tends to generate a stereotypical pattern consisting of alternating active and silent periods of neural activity—slow oscillations— and is high during wakefulness. But how is cortical complexity built up? Is it a continuum? An open question is whether cortical complexity can vary within the same brain state. Here we recorded with 32-channel multielectrode arrays from the cortical surface of the mouse and used both spontaneous dynamics (wave propagation entropy and functional complexity) and a perturbational approach (a variation of the perturbation complexity index) to measure complexity at different anesthesia levels. Variations in anesthesia level within the bistable regime of slow oscillations (0.1–1.5 Hz) resulted in a modulation of the slow oscillation frequency. Both perturbational and spontaneous complexity increased with decreasing anesthesia levels, in correlation with the decrease in coherence of the underlying network. Changes in complexity level are related to, but not dependent on, changes in excitability. We conclude that cortical complexity can vary within a single brain state dominated by slow oscillations, building up to the higher complexity associated with consciousness.
- dc.description.sponsorship Funded by EU H2020 Research and Innovation Programme, Grant 785907 (HBP SGA2) and 945539 (HBP SGA3) to MVSV and to MM, BFU2017-85048-R (MINECO) and SloW-Dyn FLAGERA-PCIN-2015-162-C02-01 to MVSV. IDIBAPS is supported by CERCA (Generalitat de Catalunya) to MVSV.
- dc.format.mimetype application/pdf
- dc.identifier.citation Dasilva M, Camassa A, Navarro-Guzman A, Pazienti A, Perez-Mendeza L, Zamora-López G, Mattia M, Sanchez-Vives MV. Modulation of cortical slow oscillations and complexity across anesthesia levels. NeuroImage. 2021;224:117415. DOI: 10.1016/j.neuroimage.2020.117415
- dc.identifier.doi http://doi.org/10.1016/j.neuroimage.2020.117415
- dc.identifier.issn 1053-8119
- dc.identifier.uri http://hdl.handle.net/10230/53534
- dc.language.iso eng
- dc.publisher Elsevier
- dc.relation.ispartof NeuroImage. 2021;224:117415.
- dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/785907
- dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/945539
- dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/BFU2017-85048-R
- dc.rights © 2020 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.accessRights info:eu-repo/semantics/openAccess
- dc.rights.uri http://creativecommons.org/licenses/by/4.0/
- dc.subject.keyword Slow waves
- dc.subject.keyword PCI
- dc.subject.keyword Wave propagation
- dc.subject.keyword Emergent activity
- dc.subject.keyword Cortical connectivity
- dc.subject.keyword Up states
- dc.title Modulation of cortical slow oscillations and complexity across anesthesia levels
- dc.type info:eu-repo/semantics/article
- dc.type.version info:eu-repo/semantics/publishedVersion