期刊
ELIFE
卷 7, 期 -, 页码 -出版社
ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.33977
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资金
- Biotechnology and Biological Sciences Research Council [BB/M009645/1]
- Medical Research Council [MR/K6010/86010/]
- Engineering and Physical Sciences Research Council [MR/K005464/1]
- Wellcome Trust [105804/Z/14/Z]
- BBSRC [BB/M009645/1] Funding Source: UKRI
- Wellcome Trust [105804/Z/14/Z] Funding Source: Wellcome Trust
Distinct 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 (7-0 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.
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