Information redundancy across spatial scales modulates early visual cortical processing

Autor: Sanne ten Oever, Kirsten Petras, Valerie Goffaux, Sarang S. Dalal
Přispěvatelé: UCL - SSH/IPSY - Psychological Sciences Research Institute, Vision, RS: FPN CN 1, RS: FPN CN 4, Cognition
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Adult
Male
Computer science
Cognitive Neuroscience
media_common.quotation_subject
LATERAL OCCIPITAL COMPLEX
PHASE
270 Language and Computation in Neural Systems
Neurosciences. Biological psychiatry. Neuropsychiatry
Electroencephalography
FREQUENCY
Cortical processing
Article
GAMMA-BAND RESPONSE
Reduction (complexity)
03 medical and health sciences
Young Adult
0302 clinical medicine
Perception
AREAS
medicine
Contrast (vision)
Humans
EEG
BRAIN
030304 developmental biology
media_common
Visual Cortex
0303 health sciences
PERCEPTION
MEG
medicine.diagnostic_test
business.industry
Magnetoencephalography
Pattern recognition
Visual cortex
medicine.anatomical_structure
Neurology
TIME-COURSE
Visual Perception
Female
Spatial frequency
Artificial intelligence
business
030217 neurology & neurosurgery
Information redundancy
RC321-571
Zdroj: NeuroImage, Vol. 244, p. 118613 (2021)
Neuroimage, 244:118613. Elsevier Science
Neuroimage
Petras, K, ten Oever, S, Dalal, S S & Goffaux, V 2021, ' Information redundancy across spatial scales modulates early visual cortical processing ', NeuroImage, vol. 244, 118613 . https://doi.org/10.1016/j.neuroimage.2021.118613
NeuroImage, Vol 244, Iss, Pp 118613-(2021)
NeuroImage, 244
NeuroImage
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2021.118613
Popis: Visual images contain redundant information across spatial scales where low spatial frequency contrast is informative towards the location and likely content of high spatial frequency detail. Previous research suggests that the visual system makes use of those redundancies to facilitate efficient processing. In this framework, a fast, initial analysis of low-spatial frequency (LSF) information guides the slower and later processing of high spatial frequency (HSF) detail. Here, we used multivariate classification as well as time-frequency analysis of MEG responses to the viewing of intact and phase scrambled images of human faces to demonstrate that the availability of redundant LSF information, as found in broadband intact images, correlates with a reduction in HSF representational dominance in both early and higher-level visual areas as well as a reduction of gamma-band power in early visual cortex. Our results indicate that the cross spatial frequency information redundancy that can be found in all natural images might be a driving factor in the efficient integration of fine image details.
Databáze: OpenAIRE
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