a slightly increasing trendp > 0.05
4 A-B, the I/O curve corresponding to fEPSP slope was enhanced in the fullerenol-exposed group (Corrected Total df = 314, Model F = 26.61, p < 0.05), while PS amplitude had a slightly increasing trend in both of the two fullerenol treatment group (Corrected Total df = 294, Model F = 21.89, p > 0.05).