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. 2012 Apr 4;7(4):e35024. doi: 10.1371/journal.pone.0035024

Figure 2. NMDA receptor antagonist D-APV blocked ISO+TBS induced MC spike potentiation. A1-A4.

Figure 2

D-APV effect on MC spiking. A1 . Single MC spiking patterns before, in the presence of, and 30 min following D-APV (50 µM) bath application. Arrow indicates the time of the single olfactory nerve test stimulus. A2&A3 . Peristimulus spike frequency histograms (binning 50 ms) under the control condition (red), in the presence of D-APV (green) and 20–30 min following D-APV washout of the example cell in A1 (A2); and of the average of n = 4 cells in the same condition (A3). A4 . Histogram comparing mean spike frequencies during the 250 ms intervals before (spontaneous) and at two time intervals after the olfactory nerve stimulation (evoked) under control conditions (red), during D-APV application (green) and 20–30 min following D-APV washout (black). B1-B3 . D-APV bath application blocked MC spike potentiation induced by paring ISO with TBS. B1 . Single MC spiking patterns before and 30 min following TBS induction in the presence of ISO and D-APV. B2&B3 . Peristimulus spike frequency histograms under the control condition and 20–30 min after TBS induction in the presence of ISO and D-APV of the example cell in B1 (B2); and of the average of n = 6 cells (B3). C. Histogram comparing mean spike frequencies during the 250 ms intervals before (spontaneous) and after the olfactory nerve stimulation (evoked) under control conditions (red) and 20–30 min post-induction (black). **p<0.01. Error bars, mean±SEM.