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. 2008 Jun 30;2008:814815. doi: 10.1155/2008/814815

Figure 7.

Figure 7

LTP in the columnar associative (ascending) pathway of superficial entorhinal cortex. The stimulation electrode was positioned on the surface of layer III, just deep to the recording electrode. (a) Normalized scaled amplitude of peak EPSCs evoked by test pulses in a layer II cell is plotted against time. Application of HFS delivered at time zero led to an immediate and long-lasting increase in the amplitude of EPSCs. This posttetanic potentiation lasted less than 5 minutes before it reached a stable and potentiated level. The inset shows two traces reflecting averaged EPSCs at baseline (pre-HFS) and at 30 minutes post-HFS. (b) Average normalized scaled amplitude of peak EPSCs across 11 cells. The values at 30 and 50 minutes post-HFS (1.65 ± 0.102 and 1.68 ± 0.128, resp.) were significantly different from baseline (P < .01).