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Early Visual Cortex as a Multiscale Cognitive Blackboard

Pieter R. Roelfsema, Floris P. de Lange
2016 Annual Review of Vision Science  
The architecture also has distinct advantages for the processing of visual routines that rely on a number of sequentially executed processing steps.  ...  The modulatory influences allow the early visual cortex to act as a multiscale cognitive blackboard for read and write operations by higher visual areas, which can thereby efficiently exchange information  ...  In all these cases, perceptual grouping is accompanied by the labeling of the to-be-grouped image elements in the visual cortex with enhanced neuronal activity (the precise relationship between object-based  ... 
doi:10.1146/annurev-vision-111815-114443 pmid:28532363 fatcat:2cxrryn4mvfnxdu3d5st6a7nam

New light from the dark

Emiliano Ricciardi, Pietro Pietrini
2011 Current Opinion in Neurology  
Purpose of review In this review, we discuss findings from some recent brain imaging studies that shed new light on our understanding of the role of visual experience on the development of the brain morphological  ...  The study of the blind brain is a very powerful approach to understanding not only the cross-modal plastic, adaptative modifications that occur in the 'visual' regions but primarily the functional architecture  ...  Acknowledgements We would like to thank the fellows and the colleagues who have collaborated to many of the research projects reviewed in this study, including Tomaso Vecchi, Daniela Bonino, James V.  ... 
doi:10.1097/wco.0b013e328348bdbf pmid:21677583 fatcat:5dzeibrkrjcdrgjekbu4xl3d6a

Bio-inspired computer vision: Towards a synergistic approach of artificial and biological vision

N. V. Kartheek Medathati, Heiko Neumann, Guillaume S. Masson, Pierre Kornprobst
2016 Computer Vision and Image Understanding  
To this extent, this paper provides new insights and a starting point for investigators interested in the design of biology-based computer vision algorithms and pave a way for much needed interaction between  ...  Based on this comparative analysis of computer and biological vision, we present some recent models in biological vision and highlight a few models that we think are promising for future investigations  ...  H N acknowledges support from DFG in the SFB/TRR 'A Companion Technology for Cognitive Technical Systems. P K acknowledges support from the EC IP project FP7-ICT-2011-9 no. 600847 (RENVISION).  ... 
doi:10.1016/j.cviu.2016.04.009 fatcat:lad5bwlqgbb5nhgtnxj6d32mc4

Coarse-grain parallel computing for very large scale neural simulations in the NEXUS simulation environment

Ko Sakai, Paul Sajda, Shih-Cheng Yen, Leif H. Finkel
1997 Computers in Biology and Medicine  
We describe a neural simulator designed for simulating very large scale models of cortical architectures.  ...  Coarse-grain parallel computing offers natural advantages in simulating functionally segregated neural processes.  ...  Acknowledgments This work was supported by grants from The Office of Naval Research (N00014-93-1-0681), The Whitaker Foundation, and The McDonnell-Pew Program in Cognitive Neuroscience.  ... 
doi:10.1016/s0010-4825(96)00029-7 pmid:9303264 fatcat:cmr5qqwqtrbxzdtjsjxkho5oku

Feed-Forward Segmentation of Figure-Ground and Assignment of Border-Ownership

Hans Supèr, August Romeo, Matthias Keil, Vladimir Brezina
2010 PLoS ONE  
On the contrary, a role of feedforward projections in figure-ground segmentation is unknown.  ...  Two main processes herein are boundary assignment and surface segregation, which rely on the integration of global scene information.  ...  Jehee for her contributions during the initial start of the project. Author Contributions Conceived and designed the experiments: HS. Performed the experiments: HS AR. Analyzed the data: HS.  ... 
doi:10.1371/journal.pone.0010705 pmid:20502718 pmcid:PMC2873306 fatcat:3gobbvqndfb3zlylbz5nulbvmy

Recurrent dynamics in the cerebral cortex: Integration of sensory evidence with stored knowledge

Wolf Singer
2021 Proceedings of the National Academy of Sciences of the United States of America  
Current concepts of sensory processing in the cerebral cortex emphasize serial extraction and recombination of features in hierarchically structured feed-forward networks in order to capture the relations  ...  Here a concept is proposed that assigns specific functions to the dynamics of cortical networks and combines, in a unifying approach, the respective advantages of recurrent and feed-forward processing.  ...  Grouping criteria based on higher-order statistics of natural scenes are, in all likelihood, stored in the functional architecture of downstream areas.  ... 
doi:10.1073/pnas.2101043118 pmid:34362837 pmcid:PMC8379985 fatcat:yr3fcieveffzjezsq2vpbbwcqa

The implementation of visual routines

Pieter R Roelfsema, Victor A.F Lamme, Henk Spekreijse
2000 Vision Research  
Examples of such elemental operations are visual search, texture segregation and contour grouping. Here we attempt to delineate how such elemental operations are implemented in the visual brain.  ...  Moreover, they permit transfer of information from one operator to the next, which allows flexibility in the sequencing of operations.  ...  Acknowledgements The research of P.R. and V.L. has been made possible by a fellowship of the Royal Netherlands Academy of Arts and Sciences.  ... 
doi:10.1016/s0042-6989(00)00004-3 pmid:10788648 fatcat:a2e2a5xmwzfndixxm7bu7lvhsu

Solutions to the Binding Problem

Anne Treisman
1999 Neuron  
How are the correct relaso far has focused on the problem of binding in visual tions specified between the bound elements within a perception. How does the brain segregate the correct single object?  ...  Multimodal integration for the representation Beck, J. (1967). Perceptual grouping produced by line figures. Perof space in the posterior parietal cortex. Philos. Trans. R. Soc. Lond. cep.  ...  A neural network Bruce, C., Desimone, R., and Gross, C. (1981). Visual properties of for invariant pattern recognition. Europhys.  ... 
doi:10.1016/s0896-6273(00)80826-0 pmid:10677031 fatcat:egeleazdefhmtpa2kiqhlsno2y

Beyond the classical receptive field: The effect of contextual stimuli

Lothar Spillmann, Birgitta Dresp-Langley, Chia-huei Tseng
2015 Journal of Vision  
The neurophysiology of figureground segregation in primary visual cortex.  ...  Receptive field dynamics in adult primary visual cortex. Nature, 356, 150-152.) Hypothetical wiring diagram for the perceptual filling in of the blind spot.  ... 
doi:10.1167/15.9.7 pmid:26200888 fatcat:egcns6swt5bktlqy5lxnkfmkva

The Time Dimension for Scene Analysis

D. Wang
2005 IEEE Transactions on Neural Networks  
We survey a variety of studies that address the scene analysis problem, and the results of these studies have substantially advanced the capability of neural networks for figure-ground separation.  ...  A fundamental issue in neural computation is the binding problem, which refers to how sensory elements in a scene organize into perceived objects, or percepts.  ...  Robertson for very helpful discussions concerning the Appendix, and G.J. Brown and C. von der Malsburg for insightful comments on an earlier draft. I also thank G. Hu and Y.  ... 
doi:10.1109/tnn.2005.852235 pmid:16342484 fatcat:36wrmgjbzvfb5ccrihz5ncrvfi

Neural correlates of sparse coding and dimensionality reduction

Michael Beyeler, Emily L. Rounds, Kristofor D. Carlson, Nikil Dutt, Jeffrey L. Krichmar, Aldo A. Faisal
2019 PLoS Computational Biology  
Although NSC might not apply to all brain areas (for example, motor or executive function areas) the success of NSC-based models, especially in sensory areas, warrants further investigation for neural  ...  In addition, NSC might provide a useful theoretical framework under which to understand the often complex and nonintuitive response properties of neurons in other brain areas.  ...  Because of its roots in efficient coding theories of natural image processing, there is a large body of research highlighting the role of NSC in visual cortex function (e.g., [24, 35, 41, 45, 46] ).  ... 
doi:10.1371/journal.pcbi.1006908 pmid:31246948 pmcid:PMC6597036 fatcat:llm2wwvr6jdlphqgjx6gt7ikv4

A neural theory of attentive visual search: Interactions of boundary, surface, spatial, and object representations

Stephen Grossberg, Ennio Mingolla, William D. Ross
1994 Psychological review  
Visual search data are given a unified quantitative explanation by a model of how spatial maps in the parietal cortex and object recognition categories in the inferotemporal cortex deploy attentional resources  ...  as they reciprocally interact with visual representations in the prestriate cortex, The model visual representations are organized into mUltiple boundary and surface representations, Visual search in  ...  explain search data in Section 6, is based on three types of neural network models that have been undergoing development for some time: models of 3-D visual boundary and surface representation; models  ... 
doi:10.1037//0033-295x.101.3.470 fatcat:3lwju2m7rneplc2dhegrauy3z4

A neural theory of attentive visual search: Interactions of boundary, surface, spatial, and object representations

Stephen Grossberg, Ennio Mingolla, William D. Ross
1994 Psychological review  
Visual search data are given a unified quantitative explanation by a model of how spatial maps in the parietal cortex and object recognition categories in the inferotemporal cortex deploy attentional resources  ...  as they reciprocally interact with visual representations in the prestriate cortex, The model visual representations are organized into mUltiple boundary and surface representations, Visual search in  ...  explain search data in Section 6, is based on three types of neural network models that have been undergoing development for some time: models of 3-D visual boundary and surface representation; models  ... 
doi:10.1037/0033-295x.101.3.470 pmid:7938340 fatcat:v2k5jfd7yfbwhjs3dkvq4wgzem

Extraction of Surface-Related Features in a Recurrent Model of V1-V2 Interactions

Ulrich Weidenbacher, Heiko Neumann, Eshel Ben-Jacob
2009 PLoS ONE  
The approach is based on feedforward and feedback mechanisms found in visual cortical areas V1 and V2.  ...  One way for the human visual system to infer monocular depth cues could be to extract and interpret occlusions.  ...  Biological Plausibility Our model architecture is inspired by biological mechanisms and is based on neural representations of early visual cortex.  ... 
doi:10.1371/journal.pone.0005909 pmid:19526061 pmcid:PMC2691604 fatcat:ein3tfiffrec5alpvuw7mrhcu4

Number As a Primary Perceptual Attribute: A Review

Giovanni Anobile, Guido Marco Cicchini, David C. Burr
2015 Perception  
But provided the elements are not too crowded (less than about two items per square degree in central vision, less in the periphery), there is little evidence that estimation of numerosity depends on mechanisms  ...  In this review, we examine more recent evidence suggesting a further division, between sets of items greater than the subitizing range, but sparse enough to be individuated as single items; and densely  ...  Interestingly, a recent neural model of numerosity investigates which neural architectures subserve the mapping of visual numerosities into numerical categories (numbers).  ... 
doi:10.1177/0301006615602599 pmid:26562858 pmcid:PMC5040510 fatcat:qpkudlayu5darbyvzz4paro5di
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