Figure 4.

LTP does not require synaptic activity to be maintained. A, Summary data for experiments in which two pathways were tetanized, but one pathway was stopped for 15 min after induction (open symbols). Top, Example traces. n = 6. Calibration: 0.3 mV, 10 ms. B, Summary data for experiments in which kynurenate (1 mm) was rapidly applied for 7 min after induction of LTP in one pathway (n = 6). Top, Example traces. Calibration: 30 pA, 15 ms. Error bars represent SEM. All data were collected using mouse brain slices.