... elongation for prey capture through excitation by sodium-based action potentials; the slower obliquely striated arm muscle fibers do not produce action potentials or elongation. Calcium current Cephalopod muscle Current clamp Patch clamp Sodium current Voltage clamp Contractile properties...

... recordings from cultured cells revealed that these cells possess a variety of ionic currents, including a fast transient sodium current, a calcium current and several potassium currents. The sodium current does not inactivate completely but instead decays to a steady-state component which has the same...

.... ( 1991 ). Calcium currents and graded synaptic transmission between heart interneurons of the leech . J. Neurosci . 11 , 746 – 759 . 10.1523/JNEUROSCI.11-03-00746.1991 Atkinson , N. S. , Robertson , G. A. and Ganetzky , B. ( 1991 ). A component of calcium-activated potassium...

...-activated current, blocked by 50 mmol I −1 TEA-CI and with kinetics associated with the delayed rectifier current I K . An inwardly directed current, blocked by zero-calcium salines, Cd 2+ and verapamil, was considered to be a calcium current whose activation closely matched that of the Ca 2+ -dependent...

...., Lond . 376 , 477 – 491 . 10.1113/jphysiol.1986.sp016165 Chad , J. , Eckert , R. & Ewald , D. ( 1984 ). Kinetics of calcium-dependent inactivation of calcium current in voltage-clamped neurones of Aplysia californica . J. Physiol., Lond . 347 , 279 – 300 . 10.1113...

... by the fact the these data were obtained using Na + concentration rather than Na + activity, which would have given a more realistic measure of available Na + , particularly at the higher concentrations. 9 7 1987 © 1987 by Company of Biologists 1987 sodium current calcium current...