Fig. 2.

Dose-dependent facilitatory and suppressive effects of the GABA_B antagonist CGP 35348 on LTP induced by TBS versus HFS. Left, Comparisons of the amount of control and test LTP induced by TBS in the presence of increasing concentrations of CGP 35348, using the experimental setup illustrated in Figure 1. Right, Comparisons the same as those on theleft, except that LTP was induced by HFS. Then values indicate the number of slices (1 slice per animal) tested per concentration, and each data point represents the group mean of one response per animal (± SEM).