“…Interestingly, the performance of rats with lesions involving the hippocampal CA1 region was clearly different than that of rats with lesions that did not involve that region, in that only the former group were significantly impaired by a 360° within-trial rotation of the maze (see Figure 7). These data are consistent with the results of previous studies that suggest that the hippocampus processes the sort of inertial information (Matthews, Campbell, & Deadwyler, 1988;Sharp, Blair, Etkin, & Tzanetos, 1995;Wiener, Korshuno, Garcia, & Berthoz, 1995) that would be required for path integration processes (Benhamou & Poucet, 1996;Etienne, Maurer, & Seguinot, 1996;McNaughton et al, 1996;Wiener et al, 1995; for a review, see Whishaw, McKenna, & Maaswinkel. 1997) and suggests that, as a result of a deficit in this system, hippocampal lesioned rats may not have recognized that the rotation had returned them to their starting position.…”