fast-closer axon 20: slow-closer axon 10: opener axon 8 m/s
||Bullock TH, Horridge GA (1965). Structure and Function in the Nervous Systems of Invertebrates. San Francisco: W. H. Freeman vol I p.137 table 3.2
||Most determinations were made with intracellular electrodes
||Axon diameters are: fast-closer axon 58µm: slow-closer axon 41: opener axon 36µm. Values given have usually been measured with very little saline shunt and would be appreciably higher-up to 50%-in sea water or in the animal.