Disruption of memory reconsolidation impairs storage of other, non-reactivated memory

► Intra-BLA lidocaine infusion following the reactivation of cocaine-induced CPP diminished later CPP magnitude. ► Intra-BLA lidocaine infusion following the reactivation of passive avoidance (PA) diminished subsequent PA expression. ► Intra-BLA lidocaine infusion following PA retrieval diminished both PA and cocaine-induced CPP performance in retests. ► Intra-BLA lidocaine infusion following CPP retrieval diminished subsequent CPP and PA performance in retests. ► Retrieval of two memories activated greater number of neurons than those activated by one memory retrieval in BLA.