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Fig. 5. Sample trajectories of day 1 (blue) and day 10 (red) for rat 9 in Experiment 2. (A) Map of virtual environment with cylinders drawn to scale. Hit cylinders are encircled by light grey discs. Starting points appear towards the top of the figure. (B) Detail of day 1 trajectory, as boxed in A. Dots mark every 30th trace sample (every 1.4 s). (C) Detail of day 10 trajectory, as boxed in A. (D) Rat average position relative to closest cylinder on day 1. (E) Histogram of body orientations on day 1 as measured using the angular incremental encoder. (F) Rat average position relative to closest cylinder on day 10. Note the much more peaked distribution, indicating that the rat spent more time in the vicinity of the cylinder than on day 1. (G) Histogram of body orientation on day 10. Note the pronounced orientation to S on day 10 compared to E, superimposed on a broadly distributed general orientation to SE. For details, see text.





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