P0 outward currents are insensitive to TEA.

Perforated whole-cell current of a SN DA neuron at P0. The whole cell patch was obtained and the current was recorded for five minutes to assay for decay. After 5 min, 20 mM TEA was applied in a fast perfusion system. No appreciable diminution of the current was observed. The slice was then washed. After the wash, 1 M IbTx was applied. No effect was observed on the outward current. The voltage protocol is indicated below the trace.