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 Faculties and Schools > Faculty of Science > School of Psychological Sciences |
| SWORD Depositor: | Mr Joe Tenant |
| Depositing User: | Mr Joe Tenant |
| Date Deposited: | 27 Nov 2018 15:08 |
| Last Modified: | 31 Jul 2025 20:12 |
| URI: | https://eprints.bbk.ac.uk/id/eprint/24815 |
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