Fig. 2. Long-term depression (LTD) induction and activity calculation in rat hippocampal slices. (A) Low-frequency stimulation (1 Hz, 15 min) was applied to induce LTD in hippocampal slices from sacrificed rats. (B) Activity was calculated as the area under the field potential trajectory during the activation period shown. Regions included in the calculations are represented by circles. Stimulus artifact points (indicated by the labeled arrow) were omitted from the calculations.
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