Behavioral data from the EPMZ test. Surgical group key is boxed in panel A, applies also to B–D. Numbers within the base of each bar in panel A indicate group size (n), and apply also to B-D. A, time spent in the open arms of the maze expressed as open arm ratio (i.e., open arm time/300 sec). B, number of entries into the open arms of the maze. C, number of entries into the closed arms of the maze. D, total number of arm entries. In all panels, * = significantly reduced compared to the same surgical group after i.p. saline, and @ = significantly reduced compared to YO-treated rats with crossed IBO lesions.