Link between orientation and retinotopic maps in primary visual cortex

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Maps representing the preference of neurons for the location and orientation of a stimulus on the visual field are a hallmark of primary visual cortex. It is not yet known how these maps develop and what function they play in visual processing. One hypothesis postulates that orientation maps are initially seeded by the spatial interference of ON- and OFF-center retinal receptive field mosaics. Here we show that such a mechanism predicts a link between the layout of orientation preferences around singularities of different signs and the cardinal axes of the retinotopic map. Moreover, we confirm the predicted relationship holds in tree shrew primary visual cortex. These findings provide additional support for the notion that spatially structured input from the retina may provide a blueprint for the early development of cortical maps and receptive fields. More broadly, it raises the possibility that spatially structured input from the periphery may shape the organization of primary sensory cortex of other modalities as well.
Publisher
NATL ACAD SCIENCES
Issue Date
2012-05
Language
English
Article Type
Article
Keywords

MONKEY STRIATE CORTEX; RECEPTIVE-FIELDS; OCULAR DOMINANCE; CORTICAL MAPS; SIMPLE CELLS; COLUMNS; ORGANIZATION; SYMMETRY; BRAIN; PATTERNS

Citation

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.109, no.18, pp.7091 - 7096

ISSN
0027-8424
DOI
10.1073/pnas.1118926109
URI
http://hdl.handle.net/10203/255356
Appears in Collection
BiS-Journal Papers(저널논문)
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