Figure 5.

Pairing-specific effects of OA injected into the MB calyces or the antennal lobes on acquisition of PER and during tests (same experiments as Fig. 3). Odor paired or unpaired with OA (•) or saline (○) injected into the MB calyces, and odor paired or unpaired with OA (•) or saline (○) injected into the antennal lobe. Between-group comparison of the acquisition function reveals a significant reduction of the %PER, and within-group comparison reveals a significant increase in the %PER in the group that received pairings of odor/OA MB-calyces injections.