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Journal Article

Information redundancy across spatial scales modulates early visual cortical processing

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Ten Oever,  Sanne
Maastricht University;
Language and Computation in Neural Systems, MPI for Psycholinguistics, Max Planck Society;
Donders Institute for Brain, Cognition and Behaviour, External Organizations;

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Citation

Petras, K., Ten Oever, S., Dalal, S. S., & Goffaux, V. (2021). Information redundancy across spatial scales modulates early visual cortical processing. NeuroImage. Advance online publication. doi:10.1016/j.neuroimage.2021.118613.


Cite as: http://hdl.handle.net/21.11116/0000-0009-4252-0
Abstract
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.