Retinotopy and orientation columns in the monkey: a new model

A model is presented in which orientation columns arise directly out of retinotopy. According to the model, iso-orientation lines are arrayed radially around nodal centers which correspond to cytochrome oxidase patches. The nodal centers form a square matrix superimposed upon the map of ocular domin...

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Bibliographic Details
Published in:Biological cybernetics 1984, Vol.49 (3), p.189-200
Main Authors: DOW, B. M, BAUER, R
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Electron Transport Complex IV
Eye and associated structures. Visual pathways and centers. Vision
Fundamental and applied biological sciences. Psychology
Haplorhini - anatomy & histology
Haplorhini - physiology
Models, Neurological
Orientation
Retina - physiology
Space life sciences
Vertebrates: nervous system and sense organs
Visual Cortex - physiology
Visual Perception - physiology
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Summary:A model is presented in which orientation columns arise directly out of retinotopy. According to the model, iso-orientation lines are arrayed radially around nodal centers which correspond to cytochrome oxidase patches. The nodal centers form a square matrix superimposed upon the map of ocular dominance stripes. In the supragranular layers horizontal iso-orientation lines run down the centers of ocular dominance stripes, with vertical iso-orientation lines crossing perpendicularly. Diagonal orientations (45 degrees and 135 degrees) are represented as alternating iso-orientation zones at the centers of the interstices in the matrix (internodal centers). Preferred orientations in the infragranular layers are reversed with respect to the supragranular layers. The model is consistent with new data concerning ocularity and preferred orientation in systematic penetrations through striate cortex, and helps to explain some previously puzzling features of the relationship between ocular dominance columns, orientation columns and retinotopy.
ISSN:0340-1200
1432-0770
DOI:10.1007/BF00334465