Fig. 3
From: Effects of Hypericum scabrum extract on dentate gyrus synaptic plasticity in high fat diet-fed rats
Measurement of evoked responses. Changes in excitatory postsynaptic potential (EPSP) slope and population spike (PS) amplitude in the perforant pathway–dentate gyrus (PP–DG) synapses were recorded following high-frequency stimulation (HFS). The arrows indicate PS and the slope of the EPSP (a). Typical evoked field potential sample traces in the DG recorded before and 60 min after HFS in all experimental groups (b)