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    Theory for the alignment of cortical feature maps during development

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    Type
    Article
    Authors
    Bressloff, Paul C.
    Oster, Andrew M.
    KAUST Grant Number
    KUK-C1-013-4
    Date
    2010-08-23
    Permanent link to this record
    http://hdl.handle.net/10754/599985
    
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    Abstract
    We present a developmental model of ocular dominance column formation that takes into account the existence of an array of intrinsically specified cytochrome oxidase blobs. We assume that there is some molecular substrate for the blobs early in development, which generates a spatially periodic modulation of experience-dependent plasticity. We determine the effects of such a modulation on a competitive Hebbian mechanism for the modification of the feedforward afferents from the left and right eyes. We show how alternating left and right eye dominated columns can develop, in which the blobs are aligned with the centers of the ocular dominance columns and receive a greater density of feedforward connections, thus becoming defined extrinsically. More generally, our results suggest that the presence of periodically distributed anatomical markers early in development could provide a mechanism for the alignment of cortical feature maps. © 2010 The American Physical Society.
    Citation
    Bressloff PC, Oster AM (2010) Theory for the alignment of cortical feature maps during development. Phys Rev E 82. Available: http://dx.doi.org/10.1103/PhysRevE.82.021920.
    Sponsors
    This paper was based on work supported in part by the NSF (Grant No. DMS-0209824) and by Award No. KUK-C1-013-4 made by the King Abdullah University of Science and Technology (KAUST). P.C.B. was also partially supported by the Royal Society-Wolfson Foundation, and A.M.O. was partially supported by the Neuropole de Recherche Francilien (NeRF) and an ANR MNP 'Dopanic' grant.
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review E
    DOI
    10.1103/PhysRevE.82.021920
    PubMed ID
    20866850
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevE.82.021920
    Scopus Count
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