Figure 6.

Plots of average similarity comparing the effects of saline (black) and ZIP (red) injections. a, Similarity of spatial firing patterns in the postinjection session sequence to the firing pattern in the baseline (preinjection) session. The average similarity of postinjection sessions to the baseline session is consistently lower after ZIP injections. b, Similarity of spatial firing patterns in successive sessions. Similarity is high before and after the saline injection and stays high. Similarity is low after the ZIP injection and remains low until session pair S5S6. c, Half-session similarity after saline and ZIP. Half-session similarity after ZIP injections is lower for sessions 2, 3, and 4, but not for sessions 5 and 6.