Table 1.

Values represent mean changes in the slopes of fEPSPs recorded in the four tested groups before and after tetanic stimulation

Mean slope of fEPSP        Groups	Pre-tetanus (mV/ms)	Post-tetanus (mV/ms)	Approximate percent of potentiation
CON	0.613±0.022	0.72±0.022	17.3% P<0.0001
CE	0.485±0.021	0.588±0.013	21% P<0.0001
ALZ	0.652±0.023	0.67±0.023	2.7% P=0.841
AE	0.649±0.021	0.871±0.02	34.1% P<0.0001

P-values indicate the changes in slopes of the pre- and post-tetanus fEPSPs