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. 2014 Feb 5;369(1635):20120514. doi: 10.1098/rstb.2012.0514

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© 2013 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 3. — Most BVCs treat drops like walled boundaries. (a) Photo and diagram of the wall removal manipulation. The rat was placed on the holding platform between trials. The rats were tested in the walled circular environment (150 cm diameter); then the walls were removed and they were then tested on the unwalled circular platform (155 cm diameter). The rat was placed on the holding platform between trials. Fifteen BVCs were recorded in this manipulation. (b) Six examples of BVCs which showed similar spatial firing in both the walled circle and the unwalled circle. (c) Two examples of BVCs where fields rotated upon wall removal (here approximately 90° clockwise). (d) Two examples of BVCs where spatial specificity was lost upon wall removal.