...R. J. Bicknell ABSTRACT Secretion of the peptide neurohormones oxytocin and vasopressin from terminals of magnocellular neurones in the mammalian neurohypophysis is elicited by conduction of depolarizing action potentials into terminal membranes, inducing opening of voltage-sensitive Ca 2+ channels...

...Harald Esch ABSTRACT Amplitudes of extracellular action potentials in indirect flight muscles of honey-bees and cuculiinid winter moths decline with decreasing muscle temperatures and fall suddenly to zero. Action potential durations increase with amplitude decline. Amplitudes at 11 °C are only 20...

...Paulo S. Beirão; A. L. Sorenson ABSTRACT The secretory epithelium that faces the shell of the clam Anomalocardia brasiliana is electrically excitable. It was found that two types of action potentials could be elicited by electrical stimulation. In mantles showing signs of being in the phase...

...M. J. O’Donnell ABSTRACT Action potentials (APs) have been recorded for the first time from the oocytes of an arthropod, the haematophagous insect Rhodnius prolixus . In saline containing 2 mmol 1 −1 calcium, APs could be evoked by depolarizing the oocyte membrane from its resting potential of –50...