scholarly journals Cone selectivity derived from the responses of the retinal cone mosaic to natural scenes

10.1167/7.8.6 ◽  
2007 ◽  
Vol 7 (8) ◽  
pp. 6 ◽  
Author(s):  
Thomas Wachtler ◽  
Eizaburo Doi ◽  
Te- Won Lee ◽  
Terrence J. Sejnowski
Author(s):  
Francesco LaRocca ◽  
Derek Nankivil ◽  
Theodore B. DuBose ◽  
Cynthia A. Toth ◽  
Sina Farsiu ◽  
...  
Keyword(s):  

2004 ◽  
Vol 29 (9) ◽  
pp. 968 ◽  
Author(s):  
Brian Vohnsen ◽  
Ignacio Iglesias ◽  
Pablo Artal
Keyword(s):  

2003 ◽  
Vol 15 (2) ◽  
pp. 397-417 ◽  
Author(s):  
Eizaburo Doi ◽  
Toshio Inui ◽  
Te-Won Lee ◽  
Thomas Wachtler ◽  
Terrence J. Sejnowski

Neurons in the early stages of processing in the primate visual system efficiently encode natural scenes. In previous studies of the chromatic properties of natural images, the inputs were sampled on a regular array, with complete color information at every location. However, in the retina cone photoreceptors with different spectral sensitivities are arranged in a mosaic. We used an unsupervised neural network model to analyze the statistical structure of retinal cone mosaic responses to calibrated color natural images. The second-order statistical dependencies derived from the covariance matrix of the sensory signals were removed in the first stage of processing. These decorrelating filters were similar to type I receptive fields in parvo- or konio-cellular LGN in both spatial and chromatic characteristics. In the subsequent stage, the decorrelated signals were linearly transformed to make the output as statistically independent as possible, using independent component analysis. The independent component filters showed luminance selectivity with simple-cell-like receptive fields, or had strong color selectivity with large, often double-opponent, receptive fields, both of which were found in the primary visual cortex (V1). These results show that the “form” and “color” channels of the early visual system can be derived from the statistics of sensory signals.


2006 ◽  
Vol 31 (12) ◽  
pp. 1821 ◽  
Author(s):  
Michael Pircher ◽  
Bernhard Baumann ◽  
Erich Götzinger ◽  
Christoph K. Hitzenberger

2015 ◽  
Vol 159 (1) ◽  
pp. 118-123.e1 ◽  
Author(s):  
Julie Jacob ◽  
Michel Paques ◽  
Valérie Krivosic ◽  
Bénédicte Dupas ◽  
Aude Couturier ◽  
...  

2014 ◽  
Vol 55 (1) ◽  
pp. 424 ◽  
Author(s):  
Sharee Kuny ◽  
Marc-André Filion ◽  
Miyoung Suh ◽  
Frédéric Gaillard ◽  
Yves Sauvé

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