Figure 2.

Social discrimination performance expressed as a ratio of interactions with the new vs. familiar partners tested at 6^th postioperative day. Frequency and duration of social interactions after NMDA lesion against sham controls were reduced (**P < 0.01 and *P < 0.05, respectively). Drug treatments (vinpocetine and cAVA) attenuated the deficit caused by the lesion (#P < 0.05 vs. NMDA). The performances were comparable among the intact and sham‐lesioned groups with or without drug treatments. Columns represent means ± SEM.