Local cortical desynchronization and pupil-linked arousal differentially shape brain states for optimal sensory performance.
cognitive neuroscience
human
neuroscience
perception
sensory processing
Journal
eLife
ISSN: 2050-084X
Titre abrégé: Elife
Pays: England
ID NLM: 101579614
Informations de publication
Date de publication:
10 12 2019
10 12 2019
Historique:
received:
30
08
2019
accepted:
08
12
2019
pubmed:
11
12
2019
medline:
27
5
2020
entrez:
11
12
2019
Statut:
epublish
Résumé
Instantaneous brain states have consequences for our sensation, perception, and behaviour. Fluctuations in arousal and neural desynchronization likely pose perceptually relevant states. However, their relationship and their relative impact on perception is unclear. We here show that, at the single-trial level in humans, local desynchronization in sensory cortex (expressed as time-series entropy) versus pupil-linked arousal differentially impact perceptual processing. While we recorded electroencephalography (EEG) and pupillometry data, stimuli of a demanding auditory discrimination task were presented into states of high or low desynchronization of auditory cortex via a real-time closed-loop setup. Desynchronization and arousal distinctly influenced stimulus-evoked activity and shaped behaviour displaying an inverted u-shaped relationship: States of intermediate desynchronization elicited minimal response bias and fastest responses, while states of intermediate arousal gave rise to highest response sensitivity. Our results speak to a model in which independent states of local desynchronization and global arousal jointly optimise sensory processing and performance.
Identifiants
pubmed: 31820732
doi: 10.7554/eLife.51501
pii: 51501
pmc: PMC6946578
doi:
pii:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : H2020 European Research Council
ID : 646696
Pays : International
Informations de copyright
© 2019, Waschke et al.
Déclaration de conflit d'intérêts
LW, ST, JO No competing interests declared
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