45Ca metabolism in slices of rat cerebral cortex during long-term potentiation

Ca45 kinetics was studied in 5, 15 and 30 min after potentiation. In the induction phase (1-5 min), the potentiation decreased the fraction of intracellular bound Ca. The 15-25 min potentiation the intra- and extracellular Ca levels was equal to the control ones. In 30 min, a considerable redistribution of Ca in the cells occurred.