scholarly journals Multi-center mapping of human ocular dominance columns with BOLD fMRI

2019 ◽  
Vol 19 (10) ◽  
pp. 64b
Author(s):  
Gilles de Hollander ◽  
Wietske van der Zwaag ◽  
Chencan Qiang ◽  
Peng Zhang ◽  
Tomas Knapen
Keyword(s):  
Ocular Dominance ◽  
Bold Fmri ◽  
Ocular Dominance Columns

scholarly journals Correlation model for joint development of refined retinotopic map and ocular dominance columns

2002 ◽  
Vol 42 (19) ◽  
pp. 2295-2310 ◽  
Author(s):  
Greg A. Woodbury ◽  
Rick van der Zwan ◽  
William G. Gibson
Keyword(s):  
Ocular Dominance ◽  
Correlation Model ◽  
Ocular Dominance Columns ◽  
Joint Development ◽  
Retinotopic Map

scholarly journals Monocular Cells Without Ocular Dominance Columns

2006 ◽  
Vol 96 (5) ◽  
pp. 2253-2264 ◽  
Author(s):  
Daniel L. Adams ◽  
Jonathan C. Horton
Keyword(s):  
Squirrel Monkey ◽  
Visual Processing ◽  
Striate Cortex ◽  
Single Cells ◽  
Ocular Dominance ◽  
Squirrel Monkeys ◽  
Ocular Dominance Columns ◽  
Receptive Field Property ◽  
Field Property ◽  
Made In

In many regions of the mammalian cerebral cortex, cells that share a common receptive field property are grouped into columns. Despite intensive study, the function of the cortical column remains unknown. In the squirrel monkey, the expression of ocular dominance columns is variable, with columns present in some animals and not in others. By searching for differences between animals with and without columns, it should be possible to infer how columns contribute to visual processing. Single-cell recordings outside layer 4C were made in nine squirrel monkeys, followed by labeling of ocular dominance columns in layer 4C. In the squirrel monkey, compared with the macaque, cells outside layer 4C were more likely to respond to stimulation of either eye whether ocular dominance columns were present or not. In three animals lacking ocular dominance columns, single cells were recorded from layer 4C. Remarkably, 20% of cells in layer 4C were monocular despite the absence of columns. This observation means that ocular dominance columns are not necessary for monocular cells to occur in striate cortex. In macaques each row of cytochrome oxidase (CO) patches is aligned with an ocular dominance column and receives koniocellular input serving one eye only. In squirrel monkeys this was not true: CO patches and ocular dominance columns had no spatial correlation and the koniocellular input to CO patches was binocular. Thus even when ocular dominance columns occur in the squirrel monkey, they do not transform the functional architecture to resemble that of the macaque.

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