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Network mechanisms of ongoing brain activity's influence on conscious visual perception.
- Source :
-
Nature communications [Nat Commun] 2024 Jul 08; Vol. 15 (1), pp. 5720. Date of Electronic Publication: 2024 Jul 08. - Publication Year :
- 2024
-
Abstract
- Sensory inputs enter a constantly active brain, whose state is always changing from one moment to the next. Currently, little is known about how ongoing, spontaneous brain activity participates in online task processing. We employed 7 Tesla fMRI and a threshold-level visual perception task to probe the effects of prestimulus ongoing brain activity on perceptual decision-making and conscious recognition. Prestimulus activity originating from distributed brain regions, including visual cortices and regions of the default-mode and cingulo-opercular networks, exerted a diverse set of effects on the sensitivity and criterion of conscious recognition, and categorization performance. We further elucidate the mechanisms underlying these behavioral effects, revealing how prestimulus activity modulates multiple aspects of stimulus processing in highly specific and network-dependent manners. These findings reveal heretofore unknown network mechanisms underlying ongoing brain activity's influence on conscious perception, and may hold implications for understanding the precise roles of spontaneous activity in other brain functions.<br /> (© 2024. The Author(s).)
- Subjects :
- Humans
Male
Female
Adult
Young Adult
Visual Cortex physiology
Visual Cortex diagnostic imaging
Photic Stimulation
Decision Making physiology
Nerve Net physiology
Nerve Net diagnostic imaging
Magnetic Resonance Imaging
Visual Perception physiology
Consciousness physiology
Brain physiology
Brain diagnostic imaging
Brain Mapping
Subjects
Details
- Language :
- English
- ISSN :
- 2041-1723
- Volume :
- 15
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Nature communications
- Publication Type :
- Academic Journal
- Accession number :
- 38977709
- Full Text :
- https://doi.org/10.1038/s41467-024-50102-9