Figure 2. Rapid postnatal development of dendritic Ca²⁺ transients.

A, filled circles represent measured amplitudes in stratum radiatum (100 μm from soma) for brief bursts of five action potentials (APs) at 100 Hz vs. age of the rats. B, corresponding measured monoexponential decay time constants for Ca²⁺ transients in A. C, amplitudes of Ca²⁺ transients in proximal dendrites (25 μm from soma) for brief bursts of five APs at 100 Hz vs. age of the rats. D, corresponding monoexponential decay time constants for Ca²⁺ transients in C. Data points in A−D were fitted with an exponential function represented by black traces (n = 28).