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. 2017 Jan 5;10:109. doi: 10.3389/fncir.2016.00109

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Copyright © 2017 Philips and Chakravarthy.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Development of the meridional preference map and orientation preference maps. Developing meridional preference maps when probed at (A) 200, (B) 400, (C) 600 iterations, respectively; Developing orientation preference maps when probed at (D) 200, (E) 400, (F) 600 iterations respectively with full field orientation gratings having a spatial frequency of 0.5 cpd; Developing orientation preference maps when probed at (G) 200, (H) 400, (I) 600 iterations respectively with full field orientation gratings having spatial frequency of 0.75 cpd.