Theta Oscillations Alternate With High Amplitude Neocortical Population Within Synchronized States.
cortical state
delta oscillation
independent component analysis
non-REM
slow oscillation
synchronized state
theta oscillation
Journal
Frontiers in neuroscience
ISSN: 1662-4548
Titre abrégé: Front Neurosci
Pays: Switzerland
ID NLM: 101478481
Informations de publication
Date de publication:
2019
2019
Historique:
received:
23
12
2018
accepted:
20
03
2019
entrez:
1
5
2019
pubmed:
1
5
2019
medline:
1
5
2019
Statut:
epublish
Résumé
Synchronized states are marked by large-amplitude low-frequency oscillations in the cortex. These states can be seen during quiet waking or slow-wave sleep. Within synchronized states, previous studies have noted a plethora of different types of activity, including delta oscillations (0.5-4 Hz) and slow oscillations (<1 Hz) in the neocortex and large- and small- irregular activity in the hippocampus. However, it is not still fully characterized how neural populations contribute to the synchronized state. Here we apply independent component analysis to parse which populations are involved in different kinds of neocortical activity, and find two populations that alternate throughout synchronized states. One population broadly affects neocortical deep layers, and is associated with larger amplitude slower neocortical oscillations. The other population exhibits theta-frequency oscillations that are not easily observed in raw field potential recordings. These theta oscillations apparently come from below the neocortex, suggesting hippocampal origin, and are associated with smaller amplitude faster neocortical oscillations. Relative involvement of these two alternating populations may indicate different modes of operation within synchronized states.
Identifiants
pubmed: 31037053
doi: 10.3389/fnins.2019.00316
pmc: PMC6476345
doi:
Types de publication
Journal Article
Langues
eng
Pagination
316Subventions
Organisme : Medical Research Council
ID : MR/J004448/1
Pays : United Kingdom
Commentaires et corrections
Type : ErratumIn
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