.... † To whom reprint requests should be addressed. 10 09 1991 © 1992 by Company of Biologists 1992 calcium action potential insect motoneurone increased excitability plateau potential Periplaneta americana Insect motoneurones are unipolar and the soma is not on the direct...

... cyclic AMP oocytes calcium action potential potassium Electrophysiological studies have demonstrated the presence of neurotransmitter receptors in the membranes of oocytes from several phyla. Membrane current and potential of Xenopus oocytes, for example, respond to cholinergic...

... by cooling, depending on the presence or absence of Ca 2+ 23 3 1988 © 1988 The Company of Biologists Ltd. 1988 calcium action potential leech salivary gland. The salivary gland cells of the giant Amazon leech Haementeria ghilianii are extremely large (up to 1·2 mm in diameter...

.... 05 02 1987 © 1987 by Company of Biologists 1987 calcium action potential visual neurone insect Most insects have two or three ocelli in addition to compound eyes. The ocellus contains a large number of photoreceptors that converge onto a few large second-order neurones (L...

.... Outward rectification was largely blocked by external tetraethylammonium. Possible functions of the rectifying properties of the oocyte membrane are discussed. 18 07 1986 © 1986 by Company of Biologists 1986 calcium action potential K + channels tetraethylammonium 4-aminopyridine...