Figure 10.

Representative firing rate versus HD tuning curves for HD cells from representative control (top) and IPN-lesioned (bottom) animals in the dual-chamber apparatus. The solid line indicates the cylinder 1 session, and the broken lines represent the rectangle session. Note that the cell from the control rat maintains a similar preferred direction during the transition from the familiar cylinder to the novel rectangle. In contrast, the tuning curve for the IPN-lesioned rat demonstrated a large 54° CCW shift.