... cnidarian neurones catecholamine Hydrozoa potassium conductance whole-cell recording Polyorchis penicillatus The cnidarians are believed to be the most primitive organisms with a true nervous system and attract considerable attention because of their evolutionary position and relative...

... sodium conductance potassium conductance inactivation motoneurone soma crayfish Many arthropod neuronal somata do not produce action potentials. In these non-spiking neuronal somata, it has been shown that extracellular tetraethylammonium (TEA + ) or 3-aminopyridine (3-AP), as well...

... of the resting muscle membrane to chloride ions (g ci ) increased from 488 μ S cm −2 at 15°C (pH7-8) to 730 μ S cm −2 at 45°C (pH7·4), yielding a temperature coefficient (thermal ratio, Rio) of 1·14. Resting potassium conductance (g K ) increased from 84 μ S cm −2 at 15 °C to 236 μ S cm −2 at 45 °C (R 10 =1·41...