Summary
Snail neuronal membranes have two distinct outward current components. Both components are carried by K+-ions. They are, however, differentially influenced by Tetraethylammonium. At low concentrations in the external bath (5 mM), TEA+ blocks the delayed outward current only. The fast outward current is affected if higher TEA+ concentrations are used. Intracellular TEA+, applied iontophoretically, blocks both current components in a similar manner.
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Neher, E., Lux, H.D. Differential action of TEA+ on two K+-current components of a molluscan neurone. Pflugers Arch. 336, 87–100 (1972). https://doi.org/10.1007/BF00592924
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DOI: https://doi.org/10.1007/BF00592924