Induction of robust LTP at perforant path-granule cell synapses in awake adult rats.
Average (± SEM) field excitatory postsynaptic potential (fEPSP) and population spike (PS) responses expressed as percentage of baseline values. Inset waveforms are averages of 10 sweeps taken just before tetanisation (1), 15–20 min after (2), and 5 h after (3). Calibration bars: 5 ms, 5 mV. 50T: tetanisation paradigm consisting of 50 trains of 400 Hz stimulation.