a decreasing trendp = 0.0422
Spike widths measured at the half and a third spike height were both narrower in the aged group showing a decreasing trend with development (Welch’s one-way ANOVA, p = 0.0422, F (3,15.78) = 3.45, one-way ANOVA, p = 0.0412, F (3,31) = 3.09, respectively; Fig. 3 C , D ).