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    Lamina-specific cortical dynamics in human visual and sensorimotor cortices

    Bonaiuto, J.J. and Meyer, S.S. and Little, S. and Rossiter, H. and Callaghan, M.F. and Dick, Frederic and Barnes, G.R. and Bestmann, S. (2018) Lamina-specific cortical dynamics in human visual and sensorimotor cortices. eLife 7 , e33977. ISSN 2050-084X.

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    Abstract

    10.7554/eLife.33977.001Distinct anatomical and spectral channels are thought to play specialized roles in the communication within cortical networks. While activity in the alpha and beta frequency range (7 – 40 Hz) is thought to predominantly originate from infragranular cortical layers conveying feedback-related information, activity in the gamma range (>40 Hz) dominates in supragranular layers communicating feedforward signals. We leveraged high precision MEG to test this proposal, directly and non-invasively, in human participants performing visually cued actions. We found that visual alpha mapped onto deep cortical laminae, whereas visual gamma predominantly occurred more superficially. This lamina-specificity was echoed in movement-related sensorimotor beta and gamma activity. These lamina-specific pre- and post- movement changes in sensorimotor beta and gamma activity suggest a more complex functional role than the proposed feedback and feedforward communication in sensory cortex. Distinct frequency channels thus operate in a lamina-specific manner across cortex, but may fulfill distinct functional roles in sensory and motor processes.

    Metadata

    Item Type: Article
    Keyword(s) / Subject(s): Research Article, Neuroscience, MEG, cortical laminae, action selection, feedback, feedforward, Human
    School: Birkbeck Schools and Departments > School of Science > Psychological Sciences
    SWORD Depositor: Mr Joe Tenant
    Depositing User: Mr Joe Tenant
    Date Deposited: 27 Nov 2018 15:08
    Last Modified: 27 Jul 2019 08:56
    URI: http://eprints.bbk.ac.uk/id/eprint/24815

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