Fig. 6.

Ouabain at 1 nM prevents Ca²⁺ overload of neurons induced by KA. (A) Ca²⁺ responses measured upon simultaneous application of 30 μM KA and 1 nM ouabain. Each trace represents the response of one neuron. Data from one experiment are plotted. (B) Comparison of average time course of the [Ca²⁺]_i responses obtained in experiments with 30 μM KA (N = 3, total number of analyzed neurons is 48) and 30 μM KA + 1 nM ouabain (N = 3, total number of analyzed neurons is 139). Mean values ± s.e. are plotted.