List of all functions used in the experiments.

The function values were limited to be in the ranges above. Type ‘A’ functions transform um linearly to be in a predefined (min,max) range. Type ‘B’ functions are Boolean functions based on a um>0 test. Output Type ‘C’ functions are directional functions and are based on umx & umy detailed earlier and produce an angle. All predefined ranges were chosen to cover reasonable biological values. Migration speed values are given in cell diameters per epoch. Neural electric properties are given in OASM like units, in the simulations each epoch represented half a millisecond. Only symbols of values that are referred to by symbol in the text are presented.