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. 2005 Oct 12;25(41):9398–9405. doi: 10.1523/JNEUROSCI.2149-05.2005

Figure 4.

Figure 4.

Associativity of SSP-induced STP and LTP. A, Left, Sample traces of averaged EPSPs (insets: control, 1, 2) and amplitude time series in control and after the conditioning protocol (vertical black bar). Only the postsynaptic cell was stimulated by the SSP (30×; 0.6 Hz). Right, Time course of the average EPSP amplitude (±SEM; n = 7). B, Left, Sample EPSPs (insets: control, 1, 2) and amplitude time series from an individual cell before and after a conditioning protocol with only presynaptic EPSPs triggered by the SSP (vertical black bar). Right, Time series of the average normalized (±SEM; n = 9) EPSP amplitudes. Note that with presynaptic conditioning stimuli in isolation, there is a significant LTD. c, Control; Pre, presynaptic; Post, postsynaptic.