Lamina-specific cortical dynamics in human visual and sensorimotor cortices.
Elife
; 72018 10 22.
Article
en En
| MEDLINE
| ID: mdl-30346274
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 - 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.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Desempeño Psicomotor
/
Corteza Visual
/
Retroalimentación Sensorial
/
Corteza Sensoriomotora
Límite:
Adult
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Female
/
Humans
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Male
Idioma:
En
Revista:
Elife
Año:
2018
Tipo del documento:
Article
País de afiliación:
Reino Unido