.... † 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...

... motoneurone cell body action potential Insect motoneurones are unipolar; synapses are absent from the cell body and are restricted to areas of the ganglionic neuropile. The cell body is, therefore, not on the direct route of information flow and is not normally actively invaded by action potentials...