[Isolation, identification and properties of the calcium component of the action potential in isolated neurons of the spinal ganglia of the rat].

Electrophysiological properties of isolated dorsal root ganglion neurons from adult rats were studied by intracellular microelectrodes. All investigated cells were separated into two groups according to the duration of their action potential and the shape of its falling phase. The calcium component of the action potential could be separated by placing the cells into sodium-free, calcium- and TEA-containing medium. The presence of this component was revealed in all studied neurons.