scholarly journals Information redundancy across spatial scales modulates early visual cortical processing

NeuroImage ◽  
2021 ◽  
Vol 244 ◽  
pp. 118613
Author(s):  
Kirsten Petras ◽  
Sanne ten Oever ◽  
Sarang S. Dalal ◽  
Valerie Goffaux
Keyword(s):  
Spatial Scales ◽  
Cortical Processing ◽  
Information Redundancy ◽  
Visual Cortical

scholarly journals Information redundancy across spatial scales modulates early visual cortical processing

2021 ◽  
Author(s):  
Kirsten Petras ◽  
Sanne Ten Oever ◽  
Sarang S. Dalal ◽  
Valerie Goffaux
Keyword(s):  
Spatial Frequency ◽  
Spatial Scales ◽  
High Spatial Frequency ◽  
Information Redundancy ◽  
Time Frequency ◽  
Early Visual Cortex ◽  
Efficient Integration ◽  
Efficient Processing ◽  
Visual Cortical ◽  
Human Faces

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.

Functionally distinct inhibitory neurons at the first stage of visual cortical processing

2003 ◽  
Vol 6 (12) ◽  
pp. 1300-1308 ◽  
Author(s):  
Judith A Hirsch ◽  
Luis M Martinez ◽  
Cinthi Pillai ◽  
Jose-Manuel Alonso ◽  
Qingbo Wang ◽  
...  
Keyword(s):  
Inhibitory Neurons ◽  
Cortical Processing ◽  
Visual Cortical

scholarly journals Cross-Modality Sharpening of Visual Cortical Processing through Layer-1-Mediated Inhibition and Disinhibition

Neuron ◽  
2016 ◽  
Vol 89 (5) ◽  
pp. 1031-1045 ◽  
Author(s):  
Leena A. Ibrahim ◽  
Lukas Mesik ◽  
Xu-ying Ji ◽  
Qi Fang ◽  
Hai-fu Li ◽  
...  
Keyword(s):  
Cortical Processing ◽  
Visual Cortical

scholarly journals Earliest stages of visual cortical processing are not modified by attentional load

2013 ◽  
Vol 35 (7) ◽  
pp. 3008-3024 ◽  
Author(s):  
Yulong Ding ◽  
Antigona Martinez ◽  
Zhe Qu ◽  
Steven A. Hillyard
Keyword(s):  
Cortical Processing ◽  
Attentional Load ◽  
Visual Cortical

scholarly journals Altered visual cortical processing in a mouse model of MECP2 duplication syndrome

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Dinghong Zhang ◽  
Bin Yu ◽  
Jing Liu ◽  
Weiqian Jiang ◽  
Taorong Xie ◽  
...  
Keyword(s):  
Mouse Model ◽  
Cortical Processing ◽  
Mecp2 Duplication Syndrome ◽  
Visual Cortical ◽  
Duplication Syndrome

Cooperative Representation of Visual Borders

Perception ◽  
1992 ◽  
Vol 21 (2) ◽  
pp. 185-193 ◽  
Author(s):  
Geoffrey W Stuart ◽  
Terence R J Bossomaier
Keyword(s):  
Spatial Frequency ◽  
Spatial Scales ◽  
Receptive Fields ◽  
Frequency Content ◽  
Cortical Cells ◽  
Firing Rates ◽  
Spatial Frequencies ◽  
Cooperative Coding ◽  
Stimulus Features ◽  
Visual Cortical

Recently it has been reported that the visual cortical cells which are engaged in cooperative coding of global stimulus features, display synchrony in their firing rates when both are stimulated. Alternative models identify global stimulus features with the coarse spatial scales of the image. Versions of the Munsterberg or Café Wall illusions which differ in their low spatial frequency content were used to show that in all cases it was the high spatial frequencies in the image which determined the strength and direction of these illusions. Since cells responsive to high spatial frequencies have small receptive fields, cooperative coding must be involved in the representation of long borders in the image.

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