Interactions of light and of tetraethylammonium-chloride (TEA) on action potentials in identified neurons of Helix pomatia.
In neurons B1, B2 and B3 of Helix pomatia and illumination elicited: (1) a reduction of the width of action potentials (AP) in control bath fluid; (2) an acceleration of the development of tetraethylammonium (TEA) action on AP; and (3) a diminution of the full established effect of TEA. The shortening of the AP by light was augmented with increasing prolongation of the AP, regardless of whether it was evoked by external or internal TEA or by depolarization of the cells. The effects may be interpreted on the basis of a single mechanism.
D000818:Animals; D005071:Evoked Potentials / Q000187:drug effects; D005724:Ganglia / Q000166:cytology / Q000187:drug effects*; D006372:Helix, Snails; D008027:Light; D009474:Neurons / Q000187:drug effects; D009435:Synaptic Transmission / Q000187:drug effects*; D013757:Tetraethylammonium Compounds / Q000494:pharmacology*
D013757:Tetraethylammonium Compounds